Perhaps you should try some spelling variations:
"thi trinh java snippets" » "tho trinh java snippets", "thi thanh java snippets", "thi minh java snippets", "thi trinh java 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"

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