Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
thanh tung » thanh cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tung tran » trung tran, hung tran, huong tran
tran dang » tran quang, tran hoang, tranh hang
dang cong » dung cong
tren thuc » trien thuc, tron thuc, trinh thuc
cong gai » cong hai, cong goi, cong lai
tren tau » tren may, tren dat, tren thi

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (hieu manh)) - thanh tung tran dang cong gai ((tren tau) OR (tren thuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - thanh tung tran dang cong gai ((tren tau) OR (tren thuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (hieu manh)) - thanh tung tran dang cong gai ((tren tau) OR (tren thuc))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - thanh tung tran dang cong gai ((tren tau) OR (tren thuc))*.