Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"hoi thanh 01 snippets" » "hoc thanh 01 snippets", "hai thanh 01 snippets", "hoa thanh 01 snippets", "hoi thang 01 snippets", "hoi thanh ha snippets", "hoi thanh _ snippets", "hoi thanh 01 slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("hoi thanh 01 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoi thanh 01 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi thanh 01 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi thanh 01 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.