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