Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
ky lang » ky nang, ky tang, tay lang
ky dang » ky nang, ky danh
va cham » va chat, va tham
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
va cam » va cac, va cao, va cai
vi cua » vai cua, di cua

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) OR (ky dang)) xa hoi. hieu ((va cam) or (va cham)) truc va hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat toan ((ky lang) OR (ky dang)) xa hoi. hieu ((va cam) OR (va cham)) truc va hanh vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat toan ((ky lang) OR (ky dang)) xa hoi. hieu ((va cam) or (va cham)) truc va hanh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: thuat toan ((ky lang) OR (ky dang)) xa hoi. hieu ((va cam) or (va cham)) truc va hanh vi cua viet*.