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