Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
thanh tung » thanh cong
thong cong » trong cong, tong cong, thong thong
cao thong » cao thuong, tao thong, cao phong
thanh cac » hanh cac, thanh bac, thanh ca
ho chieu » hoc thieu, doi chieu, mot chieu
tung cao » nung cao, truong cao, trung cap
cong tam » cong tac, cong tan, cong nam
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: ((theo chieu) or (ho chieu)) tinh - thanh tung cao thong cong tam ((thanh cac) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) tinh - thanh tung cao thong cong tam ((thanh cac) OR (khan cap)).
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - thanh tung cao thong cong tam ((thanh cac) or (khan cap))*.