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

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