Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
nhung cong » dung cong, thong cong, hang cong
trung va » truong va, trang va, trung ha
cong san » cong tac
than cap » khan cap, thanh lap, thanh cac
toan cau » toan cao, toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (doi chi)) sach - thanh trung va nhung cong san ((than cap) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (doi chi)) sach - thanh trung va nhung cong san ((than cap) OR (toan cau)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (doi chi)) sach - thanh trung va nhung cong san ((than cap) or (toan cau))*.