Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh de » hanh de, thanh ve, thanh do
va triet » va thiet, va trien, ve triet
lang xa » lang ha, dang xay, lang van
lam duc » lam duoc, pham duc, nam duoc
duc ban » duc tan, duc van, dua ban
ky lang » ky nang, ky dang, ky tang
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
va lam » van lam, va lap
sac ky » cac ky, sai ky
tu sac » tu sach, tu cac, tu san

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang xa hoi. lieu va lam duc ban thanh de ((((cua tre) OR (cuu tre))) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. lieu va lam duc ban thanh de ((((cua tre) OR (cuu tre))) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky lang xa hoi. lieu va lam duc ban thanh de ((((cua tre) OR (cuu tre))) or (va triet))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. lieu va lam duc ban thanh de ((((cua tre) OR (cuu tre))) or (va triet))*.