Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi chon so snippets" » "voi con so snippets", "voi phong so snippets", "voi chien so snippets", "voi hon so snippets", "voi chon loc 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: (((("voi chon 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: (((("voi chon so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi chon so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi chon so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.