Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dao hieu ca snippets" » "dao hieu code snippets", "cao hieu ca snippets", "van hieu ca snippets", "bao hiem ca snippets", "dao hieu cac snippets", "dao hieu cua snippets", "dao hieu va 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: (((("dao hieu ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao hieu ca snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dao hieu ca snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao hieu ca snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.