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