Perhaps you should try some spelling variations:
chat doc » chat hoc, chau doc, thuat doc
van chat » cao chat
van hanh » van thanh, ban hanh, van anh
thi van » thi lan, thi hanh, thi nang
va hanh » va thanh, va danh, ban hanh
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua
x hoi » o hoi, x ho, 5 hoi

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 nang ((x hoi) or (xa hoi)). thi van chat doc ((va hanh) OR (van hanh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((x hoi) OR (xa hoi)). thi van chat doc ((va hanh) OR (van hanh)) vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((x hoi) or (xa hoi)). thi van chat doc ((va hanh) OR (van hanh)) vi cua tre*".