Perhaps you should try some spelling variations:
trung va » truong va, trang va, trung ha
cua viet » ca viet, hoa viet, cua vat
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
sinh y » sinh ly
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
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: cho sinh y nang ma hoi. hieu ve cham ((truc va) or (trung va)) hanh vi cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: cho sinh y nang ma hoi. hieu ve cham ((truc va) OR (trung va)) hanh vi cua viet.
• Adding a wildcard symbol may retrieve word variants: cho sinh y nang ma hoi. hieu ve cham ((truc va) or (trung va)) hanh vi cua viet*.