Perhaps you should try some spelling variations:
dan tinh » doan tinh, dang tinh, dan trinh
te sach » toc sach
tinh vi » trinh vi, tinh voi, tinh va
thu dan » thuc dan, thu dang, thu ban
cam thu » nam thu, cac thu, ca thu
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va
vu sach » vu bach, su sach, vu khach
vi cua » vai cua, di cua
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 (vu sach)) ky nang x hoi. ((hieu va) or (hieu qua)) cam thu dan tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (vu sach)) ky nang x hoi. ((hieu va) OR (hieu qua)) cam thu dan tinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (vu sach)) ky nang x hoi. ((hieu va) or (hieu qua)) cam thu dan tinh vi cua tre*.