Perhaps you should try some spelling variations:
cam truc » cau truc, lam truoc, nam truoc
nam truc » nam truoc, nam thuc, nam trung
van nang » van quang, van ban, van dong
van hanh » van thanh, ban hanh, van anh
hanh de » hanh ve, hanh kem
vu sach » su sach, vu khach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
de cua » le cua, te cua, dieu cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (vu bach)) van nang xa hoi. hieu ve ((cam truc) or (nam truc)) van hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) van nang xa hoi. hieu ve ((cam truc) OR (nam truc)) van hanh de cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (vu bach)) van nang xa hoi. hieu ve ((cam truc) or (nam truc)) van hanh de cua tre*".