Perhaps you should try some spelling variations:
cong cong » cong dong, trong cong, dung cong
cac khu » cac khoi, cac kieu
cac thu » cach thuc, cac thoi
co bang » cao bang, con bang, co ban
co bana » co ban, cao bang, cho band
te cong » tai cong, thi cong, thu cong
vat y » vat ly, vat _
tuyen » truyen, quyen

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tap ((cac khu) or (cac thu)) đe ((((co bang) or (co bana))) or (cao dang)) vat y te cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tap ((cac khu) OR (cac thu)) đe ((((co bang) OR (co bana))) OR (cao dang)) vat y te cong cong.
• Adding a wildcard symbol may retrieve word variants: tuyen tap ((cac khu) or (cac thu)) đe ((((co bang) or (co bana))) or (cao dang)) vat y te cong cong*.