Perhaps you should try some spelling variations:
thuong luong » theo luong, cong luong, thong thuong
phuong luong » phuong duong, phuong dung, chuong duong
manh trung » manh tung, thanh trung, manh hung
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
trung va » truong va, trang va, trung ha
van tuan » van quan, van ban, anh tuan
tuan cap » than cap, thuan cam, toan 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 ((hieu manh) or (chieu sang)) - manh trung va ((phuong luong) OR (thuong luong)) van tuan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (chieu sang)) - manh trung va ((phuong luong) OR (thuong luong)) van tuan cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) or (chieu sang)) - manh trung va ((phuong luong) OR (thuong luong)) van tuan cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (chieu sang)) - manh trung va ((phuong luong) OR (thuong luong)) van tuan cap*.