Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, va triet
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » hanh vi, thanh va, thanh ve
thuc ban » thuoc ban, thuc dan, thu ban
vu khach » vu khanh, vu khac, vay khach
su triet » su viet, su tien, ve triet
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, dua tren
ve nam » he nam, va nam, le nam
y nang » ky nang, ly nang, v nang
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 y nang x hoi. hieu ve nam thuc ban thanh vi ((cua tre) or (((cua triet) OR (su triet))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach y nang x hoi. hieu ve nam thuc ban thanh vi ((cua tre) OR (((cua triet) OR (su triet)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu khach y nang x hoi. hieu ve nam thuc ban thanh vi ((cua tre) or (((cua triet) OR (su triet))))".
• Adding a wildcard symbol may retrieve word variants: vu khach y nang x hoi. hieu ve nam thuc ban thanh vi ((cua tre) or (((cua triet) OR (su triet))))*.