Perhaps you should try some spelling variations:
"vi trung data snippets" » "vi trung dai snippets", "vi trong dat snippets", "vi trung dam snippets", "va trung data snippets", "viet trung data snippets", "vien trung data snippets", "vi trung data slippers"
"using low java snippets" » "using low java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

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