Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using data code snippets" » "using java code snippets", "using sat code snippets", "missing data code snippets", "using rate code snippets"
"duc van chat snippets" » "duc cao chat snippets", "duc va chat snippets", "duc tan chat snippets", "duc manh chat snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using data code snippets") or ("duc van chat snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data code snippets") OR ("duc van chat snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( using data code snippets ) or ( duc van chat snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data code snippets") or ("duc van chat snippets"))) or ("locating bugs code snippets"))*.