Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
truc va » thuc va, thuc vat, trung va
so sanh » do sanh
nang ma » tang ma, sang ma, nang cao
ve cam » ve cham, ve cac, ve cai
sanh y » sinh y, anh y, hanh y
va cam » va cham, va cac, va cao
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, tuc xa, duc va
y nang » ky nang, ly nang, v nang
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: so sanh y nang ma hoi. hieu ((ve cam) OR (va cam)) ((tuc va) or (truc va)) hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sanh y nang ma hoi. hieu ((ve cam) OR (va cam)) ((tuc va) OR (truc va)) hanh vi cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sanh y nang ma hoi. hieu ((ve cam) OR (va cam)) ((tuc va) or (truc va)) hanh vi cua viet".
• Adding a wildcard symbol may retrieve word variants: so sanh y nang ma hoi. hieu ((ve cam) OR (va cam)) ((tuc va) or (truc va)) hanh vi cua viet*.