Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van dat hon snippets" » "van dat code snippets", "van dao hon snippets", "van dau hon snippets", "dan dat hon snippets", "van doat hon snippets", "van dat phong snippets", "van dat hang 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 dat hon 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 dat hon snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( van dat hon snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dat hon snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.