Perhaps you should try some spelling variations:
tang tao » sang tao, tang tai, nang tao
tao hoat » cao hoat, tao hoa, toan hoat
su sach » vu sach
dinh vi » dinh ve, dinh viet, dinh tri
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
so sach » so sanh, bo sach, co sach
va cam » va cham, va cac, va cao
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
cua te » cua tu

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) or (so sach)) ky tang tao hoat. hieu va cam ((xuc va) or (luc va)) dinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky tang tao hoat. hieu va cam ((xuc va) OR (luc va)) dinh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky tang tao hoat. hieu va cam ((xuc va) or (luc va)) dinh vi cua te*.