Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dao voi cua snippets" » "dao voi code snippets", "da voi cua snippets", "dao noi cua snippets", "do voi cua snippets", "dao hoi cua snippets", "dao doi cua snippets", "dao moi cua 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 voi cua 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 voi cua snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dao voi cua snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao voi cua snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.