Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van tuan » van quan, van ban, anh tuan
van hanh » van thanh, ban hanh, van anh
cac luoc » cac nuoc, cac cuoc, cac quoc
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu va
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
le cua » ly cua
te sac » te sach, te cac, te san

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 sac ky lang xa hoi. ((hieu ve) OR (hieu van)) cac luoc ((van hanh) OR (van tuan)) le cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang xa hoi. ((hieu ve) OR (hieu van)) cac luoc ((van hanh) or (van tuan)) le cua tre~".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. ((hieu ve) OR (hieu van)) cac luoc ((van hanh) or (van tuan)) le cua tre*.