Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
trung va » truong va, trang va, trung ha
hanh de » hanh ve, hanh kem
hanh di » hanh vi, hang di, danh di
so sinh » so sanh, so tinh, cho sinh
truc va » thuc va, thuc vat
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
sinh y » sinh ly
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, ly nang, v nang

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) OR (hanh de)) 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) OR (hanh de)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sinh y nang ma hoi. hieu ve cham ((truc va) or (trung va)) ((hanh di) OR (hanh de)) 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) OR (hanh de)) cua viet*.