Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
hanh han » hanh nhan, hanh phan, hanh san
van hanh » van thanh, ban hanh, van anh
hieu van » hieu va, thien van, lieu va
te sach » toc sach
han cua » hang cua, nhan cua, than cua
cam tuc » cam xuc, cam tu, nam thuc
nang xa » nang x, lang xa, nang ma
tu sach » thu sach, su sach, tu cach
cua tre » cua te, cuu tre, cua triet

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 (tu sach)) ky nang xa hoi. hieu van ((cam tuc) or (nam thuoc)) van hanh han cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (tu sach)) ky nang xa hoi. hieu van ((cam tuc) OR (nam thuoc)) van hanh han cua tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (tu sach)) ky nang xa hoi. hieu van ((cam tuc) or (nam thuoc)) van hanh han cua tre*.