Perhaps you should try some spelling variations:
thanh trung » thanh tung
trieu minh » trieu tinh, trien minh, trien kinh
cong quang » luong quang, thong quang, duong quang
tien manh » tien anh, tien thanh, tieng anh
trung cua » truong cua, trung tuan, trung cap
cong vang » cong lang, cong ngang, cong san
cua dung » cua dang, cua dong, qua dung
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((tien manh) or (trieu minh)) - thanh trung cua dung ((cong vang) OR (cong quang)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((tien manh) OR (trieu minh)) - thanh trung cua dung ((cong vang) OR (cong quang)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((tien manh) or (trieu minh)) - thanh trung cua dung ((cong vang) OR (cong quang)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((tien manh) or (trieu minh)) - thanh trung cua dung ((cong vang) OR (cong quang)) toan cau*.