Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"may pham voi snippets" » "may phay voi snippets", "may phat voi snippets", "my pham voi snippets", "may pham vi snippets", "may cham voi snippets", "may pham doi 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: (((("may pham 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: (((("may pham voi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( may pham voi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("may pham voi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.