Perhaps you should try some spelling variations:
vay khao » tay khao, van khao, vay khach
su triet » su viet, su tien, ve triet
thanh vi » hanh vi, thanh va, thanh ve
va thanh » gia thanh, ban thanh, va tinh
thi van » thi lan, thi hanh, thi nang
van cau » van dau, van hau, van chat
ly nang » ky nang, ly hang, ly vang
cuu tre » cua tre, cau tren, cau treo
cau tu » dau tu, cau truc
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: ((vay khao) OR (va khao)) ly nang x hoi. thi van cau tu va thanh vi ((su triet) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vay khao) OR (va khao)) ly nang x hoi. thi van cau tu va thanh vi ((su triet) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vay khao) OR (va khao)) ly nang x hoi. thi van cau tu va thanh vi ((su triet) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((vay khao) OR (va khao)) ly nang x hoi. thi van cau tu va thanh vi ((su triet) or (cuu tre))*.