Perhaps you should try some spelling variations:
trong tuan » trong quan, trung tuan, trong tan
chau tinh » cuu tinh, cua tinh, cac tinh
tran tuan » tran xuan, tran quang, tran thanh
nang cong » nang song, dang cong, bang cong
cong san » cong tac
san than » sang than, san thanh, ban than
than cau » toan cau, phan cau, than cap
ha tinh » va tinh, may tinh

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) or (ha tinh)) - hanh ((tran tuan) or (trong tuan)) nang cong san than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chau tinh) OR (ha tinh)) - hanh ((tran tuan) OR (trong tuan)) nang cong san than cau.
• Adding a wildcard symbol may retrieve word variants: theo ((chau tinh) or (ha tinh)) - hanh ((tran tuan) or (trong tuan)) nang cong san than cau*.