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
hanh di » hanh vi, hanh de, hang di
so sinh » so sanh, so tinh, cho sinh
ma hoi » mai hoi, xa hoi, ma hoa
sinh y » sinh ly
y nang » ky nang, ly nang, v nang
di cua » dai cua, doi cua, de 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 sinh y nang ma hoi. hieu ve cham ((truc va) or (trung va)) hanh di cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sinh y nang ma hoi. hieu ve cham ((truc va) OR (trung va)) hanh di cua viet.
• Adding a wildcard symbol may retrieve word variants: so sinh y nang ma hoi. hieu ve cham ((truc va) or (trung va)) hanh di cua viet*.