Perhaps you should try some spelling variations:
doan manh » doan minh, hoang manh, tran manh
dan manh » dang manh, van manh, day manh
tu sach » thu sach, su sach, te sach
hieu le » hieu ve, hieu he, hieu ly
na thuc » nam thuc, na thuoc, va thuc
co viet » so viet, o viet, hoc viet
y nang » ky nang, ly nang, v nang
vai co » mai co, tai co, voi co
x hoi » xa hoi, o hoi, x ho
le na » le nam, le va, le ta

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang x hoi. hieu le na thuc ((dan manh) or (doan manh)) vai co viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu le na thuc ((dan manh) OR (doan manh)) vai co viet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu le na thuc ((dan manh) or (doan manh)) vai co viet*.