Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu cua doi snippets" » "hieu qua doi snippets", "dieu cua doi snippets", "bieu cua doi snippets", "hieu sua doi snippets", "hieu cua dai snippets", "hieu cua hoi 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: (((("hieu cua doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu cua doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu cua doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu cua doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.