Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"manh tung code snippets" » "manh hung code snippets", "thanh tung code snippets", "manh bug code snippets", "manh tung code slippers"
"dung dat code snippets" » "dung va code snippets", "dung tai code snippets", "dung rate code snippets", "dung dat de snippets", "dung dat code slippers"

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: (((("manh tung code snippets") or ("dung dat code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("manh tung code snippets") OR ("dung dat code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( manh tung code snippets ) or ( dung dat code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("manh tung code snippets") or ("dung dat code snippets"))) or ("locating bugs code snippets"))*.