Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kim huu chan snippets" » "kim huu han snippets", "kim huu chau snippets", "kim huu phan snippets", "kim hue chan snippets", "kim chuc chan 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 huu chan 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 huu chan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kim huu chan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kim huu chan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.