Finding reliable and relevant information online is a core digital literacy skill. Basic keyword searches often return thousands of irrelevant results. Advanced search techniques allow you to narrow, filter, and refine results to locate exactly what you need — efficiently and safely.
When conducting research, students must:
Boolean operators are logical words used to combine or exclude keywords in a search query.
| Operator | Function | Example |
|---|---|---|
| AND | Returns results containing both terms | climate AND Pakistan |
| OR | Returns results containing either term | climate OR weather |
| NOT | Excludes a term from results | jaguar NOT car |
Tip: Most modern search engines treat a space between words as AND by default.
Enclosing a phrase in double quotation marks (" ") forces the search engine to find that exact sequence of words.
Example:
"Artificial Intelligence in Pakistan"
This returns only pages where all four words appear together in that exact order.
site: OperatorThe site: operator restricts search results to a specific website or domain type.
Examples:
climate change site:edu
Cybersecurity site:gov.pk
| Domain | Type |
|---|---|
.edu | Educational institutions |
.gov | Government websites |
.org | Non-profit organisations |
filetype: OperatorThe filetype: operator filters results to show only files of a specific format.
Examples:
Cybersecurity filetype:pdf
Data Structures filetype:ppt
Common file types: pdf, docx, ppt, xlsx, txt
*)The asterisk (*) acts as a wildcard — a placeholder for one or more unknown words in a phrase.
Example:
"the * of Pakistan"
This might return: "the history of Pakistan", "the capital of Pakistan", "the rivers of Pakistan", etc.
Wildcards are useful when you remember part of a phrase but not the complete wording.
Advanced searches become most powerful when operators are combined:
"renewable energy" site:edu filetype:pdf
This returns PDF documents about the exact phrase "renewable energy" from educational websites only.
climate change AND Pakistan NOT flood site:gov
This returns government pages about climate change in Pakistan, excluding flood-related content.
When using digital platforms for research and collaboration, always follow safe practices (SLO CS-12-F-01):
.edu, .gov, and peer-reviewed sources| Operator | Purpose | Example |
|---|---|---|
AND | Both terms must appear | AI AND robotics |
OR | Either term may appear | AI OR machine learning |
NOT | Exclude a term | python NOT snake |
" " | Exact phrase match | "deep learning" |
site: | Restrict to a domain | site:edu |
filetype: | Filter by file type | filetype:pdf |
* | Wildcard placeholder | "history of *" |