Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"con thu dong snippets" » "con thuy dong snippets", "con tu dong snippets", "con thu cong snippets", "cong thuc dong snippets", "cuong thu dong 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: (((("con thu dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("con thu dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( con thu dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("con thu dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.