Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
hanh vai » hanh vi, hanh va, hanh van
va triet » va trien, ve triet, cua triet
hanh tai » thanh tai, hang tai, han tai
thuoc va » thuc va, thuoc ma, thuong va
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
ve nam » he nam, va nam, le nam
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 y nang xa hoi. hieu ve nam thuoc va ((hanh vai) or (hanh tai)) ((va triet) or (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang xa hoi. hieu ve nam thuoc va ((hanh vai) OR (hanh tai)) ((va triet) OR (va thiet)).
• Adding a wildcard symbol may retrieve word variants: su sach y nang xa hoi. hieu ve nam thuoc va ((hanh vai) or (hanh tai)) ((va triet) or (va thiet))*.