Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
hanh trung » thanh trung, hanh trang, manh trung
hoc thieu » toc thieu, hoc hien
trung tai » truong tai, trung tam, trung dai
tai trong » tai truong, tai trung, tai cong
thanh lap » thanh san, phan lap, thanh hai
cong ban » cong bang, cong san, cong tan
khan cap » khan ap, than cap, khoan cam

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) or (theo chieu)) tinh - hanh trung tai trong cong ban ((khan cap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo chieu)) tinh - hanh trung tai trong cong ban ((khan cap) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo chieu)) tinh - hanh trung tai trong cong ban ((khan cap) or (thanh lap))*.