Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
khach van » khach san, khanh van, khach hang
cam truc » cau truc, lam truoc, nam truoc
van hanh » van thanh, ban hanh, van anh
nam truc » nam truoc, nam thuc, nam trung
vu khach » vu khanh, vu khac, vay khach
van nang » van quang, van ban, van dong
hieu ve » hieu va, hieu van
hanh de » hanh ve, hanh kem
cua tre » cua te, cuu tre, dua tren
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu khach van nang x hoi. hieu ve ((cam truc) or (nam truc)) van hanh de ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach van nang x hoi. hieu ve ((cam truc) OR (nam truc)) van hanh de ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach van nang x hoi. hieu ve ((cam truc) or (nam truc)) van hanh de ((cua tre) OR (cua triet))".
• Adding a wildcard symbol may retrieve word variants: vu khach van nang x hoi. hieu ve ((cam truc) or (nam truc)) van hanh de ((cua tre) OR (cua triet))*.