Perhaps you should try some spelling variations:
trang tuan » trung tuan, trong tuan, tran xuan
theo chau » theo chu, theo chieu, theo phap
chau tinh » cuu tinh, ha tinh, cua tinh
tran tuan » tran xuan, tran quang, tran thanh
nang cong » nang song, dang cong, bang cong
cong san » cong tac
than cau » phan cau, than cap, thanh chau
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 chau tinh - hanh ((trang tuan) or (tran tuan)) nang cong san ((than cau) OR (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chau tinh - hanh ((trang tuan) OR (tran tuan)) nang cong san ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chau tinh - hanh ((trang tuan) or (tran tuan)) nang cong san ((than cau) OR (toan cau))".
• Adding a wildcard symbol may retrieve word variants: theo chau tinh - hanh ((trang tuan) or (tran tuan)) nang cong san ((than cau) OR (toan cau))*.