Perhaps you should try some spelling variations:
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » dung cong, thong cong, hang cong
trung cap » truong cao, trung tam
hoc hieu » hoc thieu, hoc hien, doc hieu
hieu cac » hieu luc, hieu va, hieu van
cong dan » cong san, cong tan, huong dan
toan cao » toan ban
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu cac - hanh ((trung tuan) or (trung cap)) nhung cong dan ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cac - hanh ((trung tuan) OR (trung cap)) nhung cong dan ((toan cao) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu cac - hanh ((trung tuan) or (trung cap)) nhung cong dan ((toan cao) or (toan tap))*.