Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van dan he snippets" » "van dan code snippets", "van ban he snippets", "ban dan he snippets", "van dao he snippets", "van dan ve snippets", "van dan de snippets", "van dan ke 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 dan he 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 dan he snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van dan he snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dan he snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.