Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tin lieu boi snippets" » "tin hieu boi snippets", "binh lieu boi snippets", "tien lien boi snippets", "tin lieu bai snippets", "tin lieu voi snippets", "tin lieu hoc 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: (((("tin lieu boi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tin lieu boi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tin lieu boi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tin lieu boi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.