Perhaps you should try some spelling variations:
ca tren » cau tren, cu tren, la tren
hanh ve » hanh vi, hanh va, hanh kem
truc va » thuc va, thuc vat, trung va
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
tu cam » tu cham, tu cac, tu nam
cam ky » cao ky, cac ky
ma hoi » xa hoi, ma hoa, me hoi
ve cam » ve cham, ve cac, va cam
ve ca » ve cac, ve cai, ve cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu cam ky nang ((ma hoi) OR (mai hoi)). hieu ve cam ((truc va) OR (tuc xa)) hanh ve ca tren~.
• Adding a wildcard symbol may retrieve word variants: tu cam ky nang ((ma hoi) or (mai hoi)). hieu ve cam ((truc va) or (tuc xa)) hanh ve ca tren*.