Perhaps you should try some spelling variations:
thanh hai » thanh phan, thanh hoa, thanh san
suu viet » su viet, sau viet, sieu viet
hanh dao » lanh dao, thanh dat, thanh dam
sach ky » sac ky, sach y, sach ty
cao xuc » cam xuc, cao duc, cao suc
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
tang ma » tang van
xuc va » duc va, tuc va, luc va
va cao » va cac, va co, va dao

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