Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hao lieu doi snippets" » "ho lieu doi snippets", "vat lieu doi snippets", "tai lieu doi snippets", "hao lieu boi snippets", "hao lieu voi snippets", "hao lieu dai 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: (((("hao lieu 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: (((("hao lieu doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hao lieu doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao lieu doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.