Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phieu ho voi snippets" » "phieu o voi snippets", "nhieu hon voi snippets", "thieu so voi snippets", "phieu pho voi snippets", "phieu hop voi snippets", "phieu hoc voi 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: (((("phieu ho voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phieu ho voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phieu ho voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phieu ho voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.