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