Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat ca cach snippets" » "khat ha cach snippets", "hat ca cach snippets", "nhat cua cach snippets", "khat cai cach snippets", "khat cac cach snippets", "khat ca cac 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: (((("khat ca cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khat ca cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat ca cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat ca cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.