Perhaps you should try some spelling variations:
cuu tre » cua 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
hieu va » lieu va, hieu qua
truc va » thuc va, thuc vat, trung va
vi cuu » vi luu, vinh cuu
tu sac » tu sach, tu cac, tu san
luc va » duc va, tuc va, loc va
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang xa hoi. ((hieu ve) or (hieu va)) cam ((luc va) or (truc va)) hanh vi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang xa hoi. ((hieu ve) OR (hieu va)) cam ((luc va) OR (truc va)) hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang xa hoi. ((hieu ve) or (hieu va)) cam ((luc va) or (truc va)) hanh vi cuu tre*.