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