Perhaps you should try some spelling variations:
chien thang » chien thuong, chien chong, hien trang
hien khang » hien khanh, thieu khang, hien hanh
thanh tran » thanh trang, thanh toan, thanh tra
luong cong » trong cong, cong cong, tong cong
tran tuan » tran xuan, tran quang, tran thanh
dung cong » dung trong
manh toan » thanh toan, anh tuan, tinh toan
toan ban » van 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 ((hien khang) OR (chien thang)) - thanh tran tuan ((dung cong) or (luong cong)) manh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien khang) OR (chien thang)) - thanh tran tuan ((dung cong) OR (luong cong)) manh toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien khang) OR (chien thang)) - thanh tran tuan ((dung cong) or (luong cong)) manh toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien khang) OR (chien thang)) - thanh tran tuan ((dung cong) or (luong cong)) manh toan ban*.