Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, chien tranh
truong quan » trong quan, luong quan, truong van
dung duong » dung dong, dong duong, dung dung
hien hanh » dieu hanh
duong van » duong va, luong va, dang van
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thien thanh) or (hien hanh)) - thanh ((truong quan) OR (thong quan)) dung duong van tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (hien hanh)) - thanh ((truong quan) OR (thong quan)) dung duong van tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) or (hien hanh)) - thanh ((truong quan) OR (thong quan)) dung duong van tuan cao".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (hien hanh)) - thanh ((truong quan) OR (thong quan)) dung duong van tuan cao*.