Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
ban hanh » ban hang
toan ky » than ky, toan ly, toan ke
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
va lam » van lam, va lap
vi hoa » voi hoa, vi hoc, va hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat toan ky lang xa hoi. hieu va lam thuoc ((ban hanh) or (va danh)) vi hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat toan ky lang xa hoi. hieu va lam thuoc ((ban hanh) OR (va danh)) vi hoa viet.
• Adding a wildcard symbol may retrieve word variants: thuat toan ky lang xa hoi. hieu va lam thuoc ((ban hanh) or (va danh)) vi hoa viet*.