Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao thieu ve snippets" » "dao hieu ve snippets", "dao chieu ve snippets", "cao hieu ve snippets", "dao thiet ke snippets", "dao thieu so snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 thieu ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao thieu ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao thieu ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao thieu ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.