Perhaps you should try some spelling variations:
dau tieng » cau tieng, day tieng, mau tieng
dau tien » van tien
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cao tuc » dao tuc, cao suc, cao toc
cao duc » dao duc, cao suc, giao duc
va danh » va dinh, va dan, va hanh
danh bi » danh di, danh gia, danh bat

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 xa hoi. lieu va ((cao tuc) OR (cao duc)) va danh bi ((dau tieng) or (dau tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. lieu va ((cao tuc) OR (cao duc)) va danh bi ((dau tieng) OR (dau tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. lieu va ((cao tuc) OR (cao duc)) va danh bi ((dau tieng) or (dau tien))".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. lieu va ((cao tuc) OR (cao duc)) va danh bi ((dau tieng) or (dau tien))*.