Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets", "using java java slippers"
"tim hieu va snippets" » "tim lieu va snippets", "tim hieu qua snippets", "time hieu va snippets", "tim hieu va slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

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