Perhaps you should try some spelling variations:
cua khach » cua thanh, nha khach
van hanh » van thanh, ban hanh, van anh
truc van » truc va, thuc van, truc ban
kem cua » em cua, keo cua, diem cua
cua tre » cua te, cuu tre, cua triet
vu khac » vu kham, vu khanh, bui khac
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai
x hoi » xa hoi, o hoi, x ho
ban x » ban xu, ban _, ban 1

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((cua khach) or (vu khac)) van ban x hoi. hieu ((ve cam) or (va cam)) truc van hanh kem cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((cua khach) OR (vu khac)) van ban x hoi. hieu ((ve cam) OR (va cam)) truc van hanh kem cua tre.
• Adding a wildcard symbol may retrieve word variants: ((cua khach) or (vu khac)) van ban x hoi. hieu ((ve cam) or (va cam)) truc van hanh kem cua tre*.