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