Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
cua tre » cua te, cuu tre, cua triet
hanh di » hanh vi, hanh de, hang di
nang xa » nang x, lang xa, nang ma
cao cam » cao dam, cad cam, cac cam
cao cap » cao chat
xuc van » duc van, luc van, vuc van
di cua » dai cua, doi cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thuat sach)) ky nang xa hoi. hieu ((cao cam) OR (cao cap)) xuc van hanh di cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cac) or (thuat sach)) ky nang xa hoi. hieu ((cao cam) OR (cao cap)) xuc van hanh di cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thuat sach)) ky nang xa hoi. hieu ((cao cam) OR (cao cap)) xuc van hanh di cua tre*.