Perhaps you should try some spelling variations:
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va
cuu tre » cua tre, cau tren, cau treo
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
soc va » loc va, doc va, goc va
vi cuu » vi luu, vinh cuu

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

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