Perhaps you should try some spelling variations:
dang tao » sang tao, nang tao, vang tao
cam truc » cau truc, nam truc, lam truoc
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
hieu va » lieu va, hieu qua
hieu ve » hieu van
tao hai » tao dai, tao tai, tai hai
ky dang » ky nang, ky danh
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky dang tao hai. ((hieu ve) OR (hieu va)) cam truc va danh ((vi cua) or (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky dang tao hai. ((hieu ve) OR (hieu va)) cam truc va danh ((vi cua) OR (di cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky dang tao hai. ((hieu ve) OR (hieu va)) cam truc va danh ((vi cua) or (di cua)) te".
• Adding a wildcard symbol may retrieve word variants: su sach ky dang tao hai. ((hieu ve) OR (hieu va)) cam truc va danh ((vi cua) or (di cua)) te*.