Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phu san chan snippets" » "phu san chang snippets", "phu dan chan snippets", "phu san chay snippets", "phi san chan snippets", "thuy san chan snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("phu san chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phu san chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phu san chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phu san chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.