Perhaps you should try some spelling variations:
thi nang » thi cong, ki nang, thi hanh
van hanh » van thanh, ban hanh, van anh
hanh di » hanh vi, hanh de, hang di
xuc van » duc van, luc van, vuc van
nam xuc » cam xuc, nam xua, nam thuc
cua tre » cua te, cuu tre, cua triet
sach so » sach lo, sach song, sach dao
thi van » thi lan, thi hanh
xay hoi » xa hoi, tay hoi, cay phoi
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach so) OR (mach so)) van xay hoi. ((thi van) or (thi nang)) nam xuc van hanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach so) OR (mach so)) van xay hoi. ((thi van) OR (thi nang)) nam xuc van hanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach so) OR (mach so)) van xay hoi. ((thi van) or (thi nang)) nam xuc van hanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: thu ((sach so) OR (mach so)) van xay hoi. ((thi van) or (thi nang)) nam xuc van hanh di cua tre*.