Perhaps you should try some spelling variations:
cham truc » cau truc, nham thuc, pham thuc
mai viet » thi viet
so tinh » o tinh, so tin, hoi tinh
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
truc va » thuc va, thuc vat, trung va
va hanh » van hanh, va thanh, va danh
va viet » hoa viet, san viet, dao viet
tinh y » trinh y, tinh _, sinh y
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: so tinh y nang ma hoi. hieu ve cham truc va hanh vi ((va viet) OR (mai viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so tinh y nang ma hoi. hieu ve cham truc va hanh vi ((va viet) OR (mai viet))".
• Adding a wildcard symbol may retrieve word variants: so tinh y nang ma hoi. hieu ve cham truc va hanh vi ((va viet) OR (mai viet))*.