Perhaps you should try some spelling variations:
thieu tinh » trieu tinh, chieu tinh, thien tinh
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung tuan, trung cap
tran tuan » tran xuan, tran quang, tran thanh
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu tinh - hanh ((trung cua) or (tran tuan)) nhung ((cong tan) or (cong tac)) tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu tinh - hanh ((trung cua) OR (tran tuan)) nhung ((cong tan) OR (cong tac)) tran cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu tinh - hanh ((trung cua) or (tran tuan)) nhung ((cong tan) or (cong tac)) tran cau*.