Perhaps you should try some spelling variations:
van cham » van chat, van tham, va cham
quoc ban » quoc bao, quoc lan, quoc quan
hanh vai » hanh vi, hanh va, hanh tai
hieu van » hieu va, thien van, lieu va
dong ha » dong hoa, dong hoc, dong tai
vai cua » dai cua, hai cua, lai cua
dong va » dung va, luong va, dong hoa
xuc ban » duc ban, cuc ban, xuat ban
su cac » tu cac, su cao, su can
cua tu » cua tuc, cua su, cua cu

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: su cac ky ((dong ha) OR (dong va)) noi. hieu van cham ((xuc ban) OR (quoc ban)) hanh vai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su cac ky ((dong ha) or (dong va)) noi. hieu van cham ((xuc ban) OR (quoc ban)) hanh vai cua tu~".
• Adding a wildcard symbol may retrieve word variants: su cac ky ((dong ha) or (dong va)) noi. hieu van cham ((xuc ban) OR (quoc ban)) hanh vai cua tu*.