Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi dong hoc snippets" » "pho dong hoc snippets", "phi cong hoc snippets", "thi dong hoc snippets", "phi dong co snippets", "phi dong luc 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: (((("phi dong hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi dong hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi dong hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi dong hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.