Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ket hang ca snippets" » "vet thang ca snippets", "viet hang ca snippets", "dat hang ca snippets", "ket hang va snippets", "ket nang cao snippets", "ket hang tai 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: (((("ket hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ket hang ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ket hang ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ket hang ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.