Perhaps you should try some spelling variations:
thanh dat » thanh san, thanh hai, thanh van
suu viet » su viet, sau viet, sieu viet
hanh dao » lanh dao, thanh dam, doanh dao
cao duc » dao duc, cao suc, giao duc
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
cao xuc » cam xuc, cao suc, chat xuc
hieu va » lieu va, hieu qua
may hoi » may thoi, tay hoi, mai hoi
ky mang » ky nang, ke mang, ky dang

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky mang may hoi. hieu va ((cao xuc) OR (cao duc)) va ((hanh dao) or (thanh dat)) suu viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky mang may hoi. hieu va ((cao xuc) OR (cao duc)) va ((hanh dao) OR (thanh dat)) suu viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky mang may hoi. hieu va ((cao xuc) OR (cao duc)) va ((hanh dao) or (thanh dat)) suu viet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky mang may hoi. hieu va ((cao xuc) OR (cao duc)) va ((hanh dao) or (thanh dat)) suu viet*.