Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"hao dan cac snippets" » "dao dan cac snippets", "hao van cac snippets", "hat dan cac snippets", "hao dan cach snippets", "hao dang cac snippets", "hao dan ca 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 dan cac snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hao dan cac snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( hao dan cac snippets ) or ( python using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hao dan cac snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.