Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim tu cuong snippets" » "kim thu cuong snippets", "kim tu tuong snippets", "kim tu cong snippets", "kim tau cuong snippets", "kim lu cuong snippets", "kim yu cuong 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: (((("kim tu cuong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kim tu cuong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim tu cuong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim tu cuong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.