Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bieu dat cho snippets" » "bieu dac cho snippets", "lieu data cho snippets", "lieu dao cho snippets", "bieu day cho snippets", "bieu dan cho 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: (((("bieu dat cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bieu dat cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bieu dat cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bieu dat cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.