Perhaps you should try some spelling variations:
thien van » thi van
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
nam luc » nam thuc, nam duoc, nam luat
cua tre » cua te, cuu tre, cua triet
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang cao hoi. thien van ((((nam luc) OR (nang luc))) or (nhan luc)) van hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang cao hoi. thien van ((((nam luc) OR (nang luc))) OR (nhan luc)) van hanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang cao hoi. thien van ((((nam luc) OR (nang luc))) or (nhan luc)) van hanh vi cua tre*".