Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
dung duong » dung dong, dong duong, dung dung
duong manh » duong van
hoc thien » hoc hien, hoc thieu, hoc thiet
trung cao » truong cao, trung cap, trung co
manh toan » thanh toan, anh tuan, tinh toan
toan tap » toan ban

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 danh - manh ((trung cao) or (truong dai)) dung duong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien danh - manh ((trung cao) OR (truong dai)) dung duong manh toan tap*.