Perhaps you should try some spelling variations:
nhan loc » nhan luc, nhan hoc, nhan loai
toc sach » hoc sach, doc sach, thuoc sach
danh dau » lanh dao, hang dau, danh tu
danh dai » danh di, danh sai, vanh dai
vu nhan » cu nhan, vu ngan, tu nhan
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
loc va » hoc va, luc va
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: ((te sach) or (toc sach)) ky nang x hoi. hieu vu nhan loc va ((danh dai) OR (danh dau)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang x hoi. hieu vu nhan loc va ((danh dai) OR (danh dau)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ky nang x hoi. hieu vu nhan loc va ((danh dai) OR (danh dau)) cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang x hoi. hieu vu nhan loc va ((danh dai) OR (danh dau)) cua tre*.