Perhaps you should try some spelling variations:
hanh tri » thanh tri, hanh tai, hanh trinh
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 va » lieu va, hieu qua
tri cuu » tri cua, tra cuu, trinh cuu
loc va » hoc va, luc va
te sai » te tai, te bai, te lai
sai ky » sac ky
tuc va » thuc va, truc va, duc va
va cam » va cham, va cac, va cao

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

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