Perhaps you should try some spelling variations:
chat triet » chet triet, phat trien, chat thien
thanh ve » hanh ve, thanh va, thanh vien
thanh le » thinh le, thanh de, thanh liem
xuc ban » duc ban, cuc ban, quoc ban
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
nang ro » nang co, nang ho, nang ra
ty nang » ky nang, ty xang, ty hang
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 ty nang ro hoi. hieu ((ve cam) or (va cam)) xuc ban ((thanh le) or (thanh ve)) chat triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ro hoi. hieu ((ve cam) OR (va cam)) xuc ban ((thanh le) OR (thanh ve)) chat triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ro hoi. hieu ((ve cam) or (va cam)) xuc ban ((thanh le) or (thanh ve)) chat triet*.