Perhaps you should try some spelling variations:
thanh trung » thanh tung
hanh trang » canh tranh, hanh trinh, minh trang
tieu hanh » dieu hanh, tiem hanh, tien hanh
ban cong » bang cong, van cong, phan cong
cong ban » cong bang, cong san, cong tan
ban tinh » ban thanh, quan tinh, ban hanh
chat » nhat, phat

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo tieu hanh - ((hanh trang) or (thanh trung)) cua ban cong ban tinh chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu hanh - ((hanh trang) OR (thanh trung)) cua ban cong ban tinh chat.
• Adding a wildcard symbol may retrieve word variants: theo tieu hanh - ((hanh trang) or (thanh trung)) cua ban cong ban tinh chat*.