Perhaps you should try some spelling variations:
thanh trung » thanh tung
theo chieu » theo tieu, ho chieu, theo chu
chieu sang » chieu sach, chieu xanh, hieu lang
tuong tac » cong tac, luong tai, tuong lai
trung ap » trung cap, trung lap, trung tam
tong tap » trong tan, cong tac, tong hop
doan dau » doan dieu, phan dau, doan va
ap dung » xay dung, van dung

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 sang - thanh trung ap dung ((tong tap) or (tuong tac)) doan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sang - thanh trung ap dung ((tong tap) OR (tuong tac)) doan dau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sang - thanh trung ap dung ((tong tap) or (tuong tac)) doan dau*.