Perhaps you should try some spelling variations:
dang tao » nang tao, vang tao, dang tran
van hanh » van thanh, ban hanh, van anh
sang tao » hang tai
su sach » so sach, vu sach
sach vu » sach va, sach tu, sach uu
hanh ve » hanh vi, hanh va, hanh kem
luc van » luoc van, luu van, duc van
su hien » su kien, su tien, thu hien
va dao » ca dao
va cao » va cac, va co, va bao
ve su » va su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach vu ((dang tao) OR (sang tao)) hoi. hieu ((va cao) or (va dao)) luc van hanh ve su hien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach vu ((dang tao) OR (sang tao)) hoi. hieu ((va cao) OR (va dao)) luc van hanh ve su hien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach vu ((dang tao) OR (sang tao)) hoi. hieu ((va cao) or (va dao)) luc van hanh ve su hien".
• Adding a wildcard symbol may retrieve word variants: su sach vu ((dang tao) OR (sang tao)) hoi. hieu ((va cao) or (va dao)) luc van hanh ve su hien*.