Perhaps you should try some spelling variations:
chat thien » phat trien, cai thien, phat hien
ban thanh » ban hanh, ban hang
thanh ly » thanh lay, thanh ky, thanh le
xuc ban » duc ban, cuc ban, quoc ban
ve chat » va chat, van chat
sach ty » sach y, sach tu, sach thu
vu sach » vu bach, su sach, vu khach
nang co » nang cao, nang doc, nang noi
nang ro » nang ho, nang ra, nang rong
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach ty ((nang ro) or (nang co)) hoi. hieu ((ve chat) or (va cam)) xuc ban thanh ly chat thien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ty ((nang ro) OR (nang co)) hoi. hieu ((ve chat) OR (va cam)) xuc ban thanh ly chat thien.
• Adding a wildcard symbol may retrieve word variants: vu sach ty ((nang ro) or (nang co)) hoi. hieu ((ve chat) or (va cam)) xuc ban thanh ly chat thien*.