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