Perhaps you should try some spelling variations:
"thi trinh java snippets" » "tho trinh java snippets", "thi thanh java snippets", "thi minh java snippets"
"using _ java slippers" » "using _ java slippery", "using _ java grippers"
"locating bug code snippets" » "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: (((("using _ java slippers") or ("thi trinh java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using _ java slippers") OR ("thi trinh java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using _ java slippers ) or ( thi trinh java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using _ java slippers") or ("thi trinh java snippets"))) or ("locating bug code snippets"))*.