Perhaps you should try some spelling variations:
xanh hanh » danh thanh, ban hanh, van hanh
nam thuc » nam thuoc, am thuc, nam thu
xay hanh » day nhanh, day thanh, xuan hanh
su sach » so sach, vu sach
ky sang » ky nang, ky dang, ky tang
vai cua » dai cua, hai cua, lai cua
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
va nam » van nam, ha nam, va nay
ma hoi » mai hoi, ma hoa, me hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky sang ((ma hoi) or (xa hoi)). hieu va nam thuc ((xay hanh) or (xanh hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky sang ((ma hoi) OR (xa hoi)). hieu va nam thuc ((xay hanh) OR (xanh hanh)) vai cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ky sang ((ma hoi) or (xa hoi)). hieu va nam thuc ((xay hanh) or (xanh hanh)) vai cua te*.