Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huong hai so snippets" » "phuong hai so snippets", "hong hai so snippets", "huong mai so snippets", "huong dai so snippets", "huong tai so snippets", "huong thai son 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: (((("huong hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huong hai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huong hai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huong hai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.