Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khuc voi can snippets" » "chua voi can snippets", "hoc voi can snippets", "hue voi can snippets", "khuc voi cac snippets", "khuc voi cong snippets", "khuc 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: (((("khuc 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: (((("khuc voi can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuc voi can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuc voi can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.