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