Perhaps you should try some spelling variations:
thuat sai » thuat bai, thuat san, thuat cai
nam truoc » nam thuoc, lam truoc, nam truc
khoa viet » khoan viet, hoa viet, thoai viet
truoc va » truc va, thuoc va, truong va
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
vi khoa » voi khoa, ve khoa, va khoa
va nam » van nam, ha nam, va nay

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) or (thuat xay)) ky lang xa hoi. hieu va nam truoc va hanh vi khoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thuat sai) OR (thuat xay)) ky lang xa hoi. hieu va nam truoc va hanh vi khoa viet.
• Adding a wildcard symbol may retrieve word variants: ((thuat sai) or (thuat xay)) ky lang xa hoi. hieu va nam truoc va hanh vi khoa viet*.