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

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 ((tuc va) OR (thuc va)) thanh vi ca tren~.
• Adding a wildcard symbol may retrieve word variants: tu cam ky nang ((ma hoi) or (mai hoi)). hieu ve cam ((tuc va) or (thuc va)) thanh vi ca tren*.