Perhaps you should try some spelling variations:
"va luong theo snippets" » "va luong thi snippets", "van luong theo snippets", "va tuong theo snippets", "va huong theo snippets", "va luong theo slippers"
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data java snippets", "using data 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: (((("va luong theo snippets") or ("using data java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("va luong theo snippets") OR ("using data java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( va luong theo snippets ) or ( using data java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("va luong theo snippets") or ("using data java snippets"))) or ("locating bug code snippets"))*.