Perhaps you should try some spelling variations:
thuat sai » thuat bai, thuat san, thuat cai
lam thuoc » am thuc, cay thuoc, nam thuc
nam thuoc » nam thuc, nam thu, nha thuoc
nang xa » lang xa, nang ma, mang xa
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
sai ky » sac ky
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 sai ky ((nang xa) or (nang x)) hoi. hieu va ((lam thuoc) OR (nam thuoc)) va hanh vi hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sai ky ((nang xa) OR (nang x)) hoi. hieu va ((lam thuoc) OR (nam thuoc)) va hanh vi hoa viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sai ky ((nang xa) or (nang x)) hoi. hieu va ((lam thuoc) OR (nam thuoc)) va hanh vi hoa viet*".