Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
cua triet » cua viet, su triet
thuoc va » thuc va, thuoc ma, thuong va
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
vu sach » vu bach, vu khach
su sach » so sach
y nang » ky nang, ly nang, v nang
va lam » van lam, va lap
va dan » ca dan, va dao, va dau
dan vi » doan vi, don vi, dan va

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) or (vu sach)) y nang xa hoi. hieu va lam thuoc va dan vi ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) y nang xa hoi. hieu va lam thuoc va dan vi ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) y nang xa hoi. hieu va lam thuoc va dan vi ((cua triet) or (va triet))*.