Perhaps you should try some spelling variations:
trung thanh » truong thanh
thuyet anh » thuyet kinh, thuy anh, thuyet dan
thiet anh » thien anh, thien danh, thich anh
tran tuan » tran xuan, tran quang, tran thanh
dong cong » duong cong, dung cong, dang cong
van thanh » ban thanh, van tuan
thanh tap » thanh lap, thanh tai, thanh tay
cong van » cong vang, cong san, song van

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thiet anh) or (thuyet anh)) - hanh ((tran tuan) or (trung thanh)) dong cong van thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thiet anh) OR (thuyet anh)) - hanh ((tran tuan) OR (trung thanh)) dong cong van thanh tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thiet anh) or (thuyet anh)) - hanh ((tran tuan) or (trung thanh)) dong cong van thanh tap*.