Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap tiep do snippets" » "phap tieng do snippets", "phap thiet do snippets", "phap viet do snippets", "phap tiep doi snippets", "phap tiep de snippets", "phap tien do 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: (((("phap tiep do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap tiep do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap tiep do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap tiep do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.