Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu hanh da snippets" » "dieu hanh da snippets", "hien hanh da snippets", "hieu manh da snippets", "hieu hanh dao snippets", "hieu hanh dua snippets", "hieu hanh va 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 hanh da 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 hanh da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu hanh da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu hanh da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.