Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khen ba cau snippets" » "khen ca cau snippets", "khien ban cau snippets", "kien ban cau snippets", "khen bac cau snippets", "khen ban cau snippets", "khen bo cau 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: (((("khen ba cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khen ba cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khen ba cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khen ba cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.