Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"phi vat hon snippets" » "phi vat code snippets", "phi va hon snippets", "phi van hon snippets", "phap vat hon snippets", "phi vat hoc snippets", "phi vat con snippets", "phi vat khong 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: (((("phi vat hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi vat hon snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( phi vat hon snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi vat hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.