Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
hieu tinh » chieu tinh, lieu tinh, kieu tinh
tranh cua » doanh cua, manh cua
cua trung » cua truong, xuan trung, cua nhung
tran chau » tranh chap, tran huu
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
tac tran » tan tran, tac trai, tac tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu tinh - canh tranh cua trung cong tac tran chau~.
• Adding a wildcard symbol may retrieve word variants: doc hieu tinh - canh tranh cua trung cong tac tran chau*.