Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sach » chinh sach, chiet tach, chieu sang
thong song » thong cong, thong dong, thong hong
trung he » trong he, trung hieu, trung hien
trung ha » trung hoc, trung tam, trung cap
song van » hoang van, trong van, duong van
van toan » van tuan, van tan, van thanh
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 ((thieu xanh) or (chieu sach)) - thanh ((trung he) OR (trung ha)) thong song van toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sach)) - thanh ((trung he) OR (trung ha)) thong song van toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu sach)) - thanh ((trung he) OR (trung ha)) thong song van toan tap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu sach)) - thanh ((trung he) OR (trung ha)) thong song van toan tap*.