Perhaps you should try some spelling variations:
ban hanh » ban hang
truc ban » thuc ban, truc dan, truc van
cuu tre » cau tren, cau treo
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu ve » hieu van
cua tre » cua te, cua triet, dua tren
hieu va » lieu va, hieu qua
hanh de » hanh ve, hanh kem
te sai » te tai, te bai, te lai
sai ky » sac ky

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sai ky lang xa hoi. ((hieu ve) OR (hieu va)) cau truc ban hanh de ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sai ky lang xa hoi. ((hieu ve) OR (hieu va)) cau truc ban hanh de ((cua tre) or (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: te sai ky lang xa hoi. ((hieu ve) OR (hieu va)) cau truc ban hanh de ((cua tre) or (cuu tre))*.