Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
sach thue » sach thieu, sach tham, cach thuc
sach thu » sach thieu, sach tham, cach thuc
va doanh » van doanh, vay doanh, va danh
chat xuc » chat huu, cam xuc, chao xu
cham xuc » cam xuc, cham soc, pham duc
van cua » vang cua, ban cua, dan cua
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 thu) or (sach thue)) nang ma hoi. hieu ve ((cham xuc) or (chat xuc)) va doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach thue)) nang ma hoi. hieu ve ((cham xuc) OR (chat xuc)) va doanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sach thue)) nang ma hoi. hieu ve ((cham xuc) or (chat xuc)) va doanh van cua tre*.