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