Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao cong hoi snippets" » "cac cong hoi snippets", "cao dang hoi snippets", "cua cong hoi snippets", "cao cong nhoi snippets", "cao cong hoa snippets", "cao cong hai 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: (((("cao cong hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao cong hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao cong hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao cong hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.