Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao nhan doc snippets" » "ca nhan doc snippets", "cam nhan doc snippets", "tao nhan doc snippets", "cao nhan duoc snippets", "cao nhanh doc snippets", "cao than doc 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 nhan doc 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 nhan doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao nhan doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao nhan doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.