Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cham nen toc snippets" » "cham den toc snippets", "cham nhin toc snippets", "cham ninh toc snippets", "cham nien toi 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: (((("cham nen toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cham nen toc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cham nen toc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cham nen toc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.