Perhaps you should try some spelling variations:
"trong viec thuc snippets" » "cong viec thuc snippets", "trong dieu thuc snippets", "trong hiep thuc snippets", "trong viet thuc snippets", "trong kien thuc snippets", "trong ve thuc snippets", "trong viec thuc slippers"
"dung java java snippets" » "dung va java snippets", "dung java 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: (((("trong viec thuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong viec thuc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong viec thuc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong viec thuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.