Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
lang ha » long ha
lang xa » dang xay, lang van
soc va » loc va, doc va, goc va
vi cuu » vi luu, vinh cuu
te cac » tu cac, ve cac, te cao

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 cac ky ((lang xa) OR (lang ha)) hoi. hieu va thanh ((soc va) OR (hoc va)) hanh vi cuu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky ((lang xa) OR (lang ha)) hoi. hieu va thanh ((soc va) or (hoc va)) hanh vi cuu tre~".
• Adding a wildcard symbol may retrieve word variants: te cac ky ((lang xa) OR (lang ha)) hoi. hieu va thanh ((soc va) or (hoc va)) hanh vi cuu tre*.