Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phan huu hoi snippets" » "phan huu code snippets", "pham huu hoi snippets", "phan huy hoi snippets", "phan hieu hoi snippets", "phan huu ho snippets", "phan huu hai snippets", "phan cuu hoi snippets"
"python using java snippets" » "python using data 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: (((("phan huu hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan huu hoi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phan huu hoi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan huu hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.