Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
thien danh » thien anh, thien dang, thien chanh
quang uan » quang tuan, quang ban, quang tran
uan nhung » quan nhung, ban nhung, san nhung
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
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 ((thien thanh) or (thien danh)) - nhanh quang uan nhung ((cong tan) OR (cong tac)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien thanh) OR (thien danh)) - nhanh quang uan nhung ((cong tan) OR (cong tac)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien thanh) or (thien danh)) - nhanh quang uan nhung ((cong tan) OR (cong tac)) toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien thanh) or (thien danh)) - nhanh quang uan nhung ((cong tan) OR (cong tac)) toan cau*.