Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
hieu quan » lieu quan, thien quan, lien quan
thuoc van » thuoc va, thuc van, thuoc ban
van doanh » toan doanh, van dong, van thanh
doanh dan » doanh ban, doanh van, doanh dao
cua viet » ca viet, hoa viet, cua vat
nang xa » nang x, lang xa, nang ma
dan cua » dan ca, ban cua, dai cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky nang xa hoi. ((hieu quan) or (hieu qua)) lam thuoc van doanh dan cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky nang xa hoi. ((hieu quan) OR (hieu qua)) lam thuoc van doanh dan cua viet.
• Adding a wildcard symbol may retrieve word variants: te sac ky nang xa hoi. ((hieu quan) or (hieu qua)) lam thuoc van doanh dan cua viet*.