Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
cu tren » tu tren, dua tren
lang xa » lang ha, dang xay, lang van
hanh ve » hanh vi, hanh va, hanh kem
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va
cam luc » cam xuc, cau luc
luc va » duc va, tuc va, loc va
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ve cu » ve cau, ve chu, ve cua

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: tu sai ky ((lang xa) OR (nang x)) hoi. ((hieu ve) OR (hieu van)) cam luc va hanh ve cu tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sai ky ((lang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) cam luc va hanh ve cu tren~".
• Adding a wildcard symbol may retrieve word variants: tu sai ky ((lang xa) or (nang x)) hoi. ((hieu ve) OR (hieu van)) cam luc va hanh ve cu tren*.