Perhaps you should try some spelling variations:
thien danh » thien anh, thien dang, thien thanh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
toan cao » toan ban, toan tap
va hanh » van hanh, va thanh, va danh
va nang » van nang, da nang, cam nang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thien danh) OR (chieu xanh)) - hanh tinh ((va hanh) OR (va nang)) cong manh toan cao~.
• Adding a wildcard symbol may retrieve word variants: hoc ((thien danh) or (chieu xanh)) - hanh tinh ((va hanh) or (va nang)) cong manh toan cao*.