Perhaps you should try some spelling variations:
dinh vi » dinh ve, dinh viet, dinh tri
sach ly » sach y, sach ty, sach hay
hieu va » lieu va, hieu qua
va cham » va chat, va tham
tang ma » mang may, tang van
sach lo » sach dao, sach doi, sach hoi
xuc va » duc va, luc va, xac va
tuc va » thuc va, truc va, tuc xa
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: tu ((sach ly) or (sach lo)) tang ma hoa. hieu va cham ((xuc va) OR (tuc va)) dinh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ly) OR (sach lo)) tang ma hoa. hieu va cham ((xuc va) OR (tuc va)) dinh vi cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach ly) or (sach lo)) tang ma hoa. hieu va cham ((xuc va) OR (tuc va)) dinh vi cua te*".