Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
doanh dan » doanh ban, doanh van, doanh dao
hieu van » hieu va, thien van
cham duc » pham duc, cham soc, pham duy
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
duc van » duc va, duc tan, duc manh
dan cua » dan ca, ban cua, dai cua
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. ((hieu ve) or (((hieu van) OR (lieu va)))) cham duc van doanh dan cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. ((hieu ve) OR (((hieu van) OR (lieu va)))) cham duc van doanh dan cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. ((hieu ve) or (((hieu van) OR (lieu va)))) cham duc van doanh dan cua tre*".