Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
thong cong » trong cong, tong cong, thong thong
ctinh cua » chinh cua, sinh cua, trinh cua
tinh cua » trinh cua, sinh cua, tinh chat
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: theo chieu sach - hanh ((ctinh cua) or (tinh cua)) thong cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - hanh ((ctinh cua) OR (tinh cua)) thong cong tan toan cau*.