Perhaps you should try some spelling variations:
tham soc » tham nuoc, thai son, ham so
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
hieu va » lieu va, hieu qua
hieu ve » hieu van
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
vi cuu » vi luu, vinh cuu
te sac » te sach, te cac, te san

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 ve) or (hieu va)) ((tham soc) or (cham soc)) 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 ve) OR (hieu va)) ((tham soc) OR (cham soc)) va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. ((hieu ve) or (hieu va)) ((tham soc) or (cham soc)) va hanh vi cuu tre*.