Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
ban thanh » ban hanh, ban hang
thanh de » hanh de, thanh ve, thanh do
de chat » de phat, ve chat, du chat
xuc ban » duc ban, cuc ban, quoc ban
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
nang ho » nang hoc, nang co, tang ho
nang ro » nang co, nang ra, nang rong
va cam » va cham, va cac, va cao
ve cam » ve cham, ve cac, ve cai

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 ky ((nang ro) OR (nang ho)) hoi. hieu ((ve cam) or (va cam)) xuc ban thanh de chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky ((nang ro) OR (nang ho)) hoi. hieu ((ve cam) OR (va cam)) xuc ban thanh de chat triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky ((nang ro) OR (nang ho)) hoi. hieu ((ve cam) or (va cam)) xuc ban thanh de chat triet".
• Adding a wildcard symbol may retrieve word variants: su sach ky ((nang ro) OR (nang ho)) hoi. hieu ((ve cam) or (va cam)) xuc ban thanh de chat triet*.