Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoc don chat snippets" » "hoc don code snippets", "hoc doc chat snippets", "hoc cong chat snippets", "hoc dinh chat snippets", "hoc dong chat snippets", "hoc dan chat snippets", "hoc do chat 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: (((("hoc don chat snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc don chat snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc don chat snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc don chat snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.