Perhaps you should try some spelling variations:
thuat sai » thuat san, thuat cai, thuat tai
thuat bai » thuat bao, thuyet bai, thuat xay
nam truoc » nam thuoc, lam truoc, nam truc
khoa viet » khoan viet, hoa viet, thoai viet
truoc va » truc va, thuoc va, truong va
hanh voi » hanh vi, hanh noi, hanh moi
voi khoa » noi khoa, hoi khoa, loi khoa
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
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 bai)) ky lang xa hoi. hieu va nam truoc va hanh voi khoa viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thuat sai) OR (thuat bai)) ky lang xa hoi. hieu va nam truoc va hanh voi khoa viet".
• Adding a wildcard symbol may retrieve word variants: ((thuat sai) OR (thuat bai)) ky lang xa hoi. hieu va nam truoc va hanh voi khoa viet*.