Perhaps you should try some spelling variations:
hanh dieu » han dieu, hinh dieu, hoang dieu
hieu van » hieu va, thien van, lieu va
cau phuc » chau phu, huu phuc, van phuc
van hanh » van thanh, ban hanh, van anh
dieu tra » dieu tri, kiem tra, dieu cua
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
tra tre » tran tren, tran tri, tran tro

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu van ((cau phuc) OR (cau truc)) van hanh dieu tra tre~".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu van ((cau phuc) OR (cau truc)) van hanh dieu tra tre*.