Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
tham luc » tham nuoc, nhan luc, thuy luc
than luc » nhan luc, than duc, thanh luu
hanh vai » hanh vi, hanh va, hanh tai
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet

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

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