Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vap nhung do snippets" » "vap nhung code snippets", "va nhung do snippets", "ve nhung do snippets", "voi nhung do snippets", "vap nhung don snippets", "vap nhung doi snippets", "vap nhung bo 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: (((("vap nhung do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vap nhung do snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( vap nhung do snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vap nhung do snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.