Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vung va chat snippets" » "dung va chat snippets", "luong va chat snippets", "duong va chat snippets", "vung van chat snippets", "vung va phat snippets", "vung va cham 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: (((("vung va chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vung va chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vung va chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vung va chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.