Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"viet tu mo snippets" » "viet duc mo snippets", "viet ngu mo snippets", "viet tu so snippets", "viet tu do snippets", "viet tu ma 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: (((("viet tu mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet tu mo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( viet tu mo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet tu mo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.