Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chieu su cao snippets" » "hieu su cao snippets", "chieu tu cao snippets", "thieu so cao snippets", "chieu cu cao snippets", "chieu vu cao snippets", "chieu su co 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: (((("chieu su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chieu su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chieu su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chieu su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.