Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"van khang co snippets" » "van khang code snippets", "van khanh co snippets", "van thanh co snippets", "van quang co snippets", "van khong co snippets", "van khang cu snippets", "van khung co snippets"
"using java java snippets" » "using data java snippets"

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

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