Perhaps you should try some spelling variations:
thac toc » thac cac, thi toc
cau treo » cau theo, cau tren, cau triet
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
vi cau » va cau, ve cau, di cau
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 ky nang x hoi. hieu va ((thac toc) OR (cac toc)) va danh vi cau treo~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x hoi. hieu va ((thac toc) OR (cac toc)) va danh vi cau treo".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang x hoi. hieu va ((thac toc) OR (cac toc)) va danh vi cau treo*.