Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"noi dung tot snippets" » "hoc dung tot snippets", "noi dung mot snippets", "noi dong tot snippets", "noi dung toi 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: (((("noi dung tot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("noi dung tot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( noi dung tot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("noi dung tot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.