Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
vang thanh » van thanh, dang thanh, tang thanh
hanh dung » thanh dung, anh dung, hanh dong
cong vang » cong lang, cong quang, cong ngang
thanh cau » thanh chau, thanh mau, nhanh cau
anh tang » anh bang, anh dang, anh nang
ban cong » bang cong, van cong, phan cong

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 dung) or (anh tang)) cua ban cong vang thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - ((hanh dung) OR (anh tang)) cua ban cong vang thanh cau.
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - ((hanh dung) or (anh tang)) cua ban cong vang thanh cau*.