Perhaps you should try some spelling variations:
thai son » thai den, thai do, thai hoc
hieu van » hieu va, thien van, lieu va
tham soc » cham soc, tham nuoc, tham hoa
cuu tre » cua tre, cau tren, cau treo
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
vi cuu » vi luu, vinh cuu
te sac » te sach, te cac, te san
ham so » nam so, cham soc
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: te sac ky lang xa hoi. hieu van ((((tham soc) or (ham so))) or (thai son)) 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 van ((((tham soc) OR (ham so))) OR (thai son)) va hanh vi cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sac ky lang xa hoi. hieu van ((((tham soc) or (ham so))) or (thai son)) va hanh vi cuu tre*.