Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
lang van » dang van, tang van, hoang van
va triet » va thiet, va trien, ve triet
hanh de » hanh ve, hanh kem
van hoe » van hoa, van hoc, van hieu
hieu va » lieu va, hieu qua
ky lang » ky nang, ky dang, ky tang
ban ky » van ky, dan ky
xuc va » tuc va, luc va, xac va
va dau » va dao
tu ban » thu ban, te ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky lang van hoe. hieu va dau ((xuc va) OR (duc va)) hanh de ((va triet) or (cua viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky lang van hoe. hieu va dau ((xuc va) OR (duc va)) hanh de ((va triet) OR (cua viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky lang van hoe. hieu va dau ((xuc va) OR (duc va)) hanh de ((va triet) or (cua viet))".
• Adding a wildcard symbol may retrieve word variants: tu ban ky lang van hoe. hieu va dau ((xuc va) OR (duc va)) hanh de ((va triet) or (cua viet))*.