Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc va » thuc va, thuoc ma, thuong va
va triet » va trien, ve triet, cua triet
hanh vai » hanh vi, hanh tai, hanh van
hanh va » hang va, hanh vi
su sach » so sach, vu sach
hieu le » hieu ve, hieu he, hieu ly
nang ma » tang ma, sang ma, nang cao
sach v » sach va, sach y, sach 2
le nam » ly nam, he nam, le na
ma hoi » mai hoi, xa hoi, ma hoa
v nang » va nang, vu nang, van nang
thiet » thieu

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 v nang ma hoi. hieu le nam thuoc va ((hanh vai) or (hanh va)) ((va triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach v nang ma hoi. hieu le nam thuoc va ((hanh vai) OR (hanh va)) ((va triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: su sach v nang ma hoi. hieu le nam thuoc va ((hanh vai) or (hanh va)) ((va triet) or (va thiet))*.