Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh ca » doanh cua, doanh cao, doanh va
van cau » van dau, van hau, van chat
van cam » van nam, van lam, van dam
tu sach » thu sach, te sach, tu cach
nang ma » tang ma, sang ma, nang cao
ty nang » ky nang, ty xang, ty hang
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
lo van » le van, vo van, so van
ca cua » co cua

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) or (su sach)) ty nang ma hoi. hieu ((van cam) or (van cau)) lo van doanh ca cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ty nang ma hoi. hieu ((van cam) OR (van cau)) lo van doanh ca cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ty nang ma hoi. hieu ((van cam) or (van cau)) lo van doanh ca cua tre*.