Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
manh toan » thanh toan, anh tuan, tinh toan
ban cong » bang cong, van cong, phan cong
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien nhanh - hanh trang cua ban cong ((manh toan) or (dan than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien nhanh - hanh trang cua ban cong ((manh toan) OR (dan than)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc hien nhanh - hanh trang cua ban cong ((manh toan) or (dan than)) ban*.