Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"hoc cho yong snippets" » "hoc cho code snippets", "hoc cho cong snippets", "hoc cho dong snippets", "hoc cho huong snippets", "hoc cao yong snippets", "hoc pho yong snippets", "hoc co yong 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 cho yong 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 cho yong snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( hoc cho yong snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc cho yong snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.