Perhaps you should try some spelling variations:
thien tinh » khien tinh, tien tinh, trien tinh
thien minh » tien minh, trien minh, thien chinh
thanh tung » thanh cong
dung cong » dung trong
tung qua » dung qua, tuong quan, trung quan
qua dung » quang dung, su dung, qua song
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
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 tinh) OR (thien minh)) - thanh tung qua dung cong tan toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thien tinh) OR (thien minh)) - thanh tung qua dung cong tan toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thien tinh) OR (thien minh)) - thanh tung qua dung cong tan toan cau*.