Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can van cau snippets" » "cac van cau snippets", "can ban cau snippets", "tan van cau snippets", "can van dau snippets", "can van hau snippets", "can van chat 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: (((("can van 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: (((("can van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.