Perhaps you should try some spelling variations:
thanh doi » thanh loi, thanh moi, thanh hoai
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc dao » thuoc bao, thuoc cao, thuoc dac
hieu van » hieu va, thien van, lieu va
thanh do » thanh de, thanh pho, thanh hoa
cua tre » cua te, cua triet, dua tren
toc sac » toc sach, toc san, hoc sach
cuu tre » cau tren, cau treo
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sac ky nang xa hoi. hieu van nam thuoc dao ((thanh doi) OR (thanh do)) ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sac ky nang xa hoi. hieu van nam thuoc dao ((thanh doi) OR (thanh do)) ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sac ky nang xa hoi. hieu van nam thuoc dao ((thanh doi) OR (thanh do)) ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: toc sac ky nang xa hoi. hieu van nam thuoc dao ((thanh doi) OR (thanh do)) ((cua tre) or (cuu tre))*.