Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, trien tinh
tien tinh » tien thinh, tien trinh, trien tinh
dang cong » dung cong
sinh cua » manh cua, dinh cuu, sinh va
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan ban » van ban
luat » luan, xuat

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 (tien tinh)) - hanh ((trinh luat) or (sinh cua)) dang cong tan toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien tinh) OR (tien tinh)) - hanh ((trinh luat) OR (sinh cua)) dang cong tan toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien tinh) or (tien tinh)) - hanh ((trinh luat) or (sinh cua)) dang cong tan toan ban*.