Perhaps you should try some spelling variations:
dang xay » dang van, van xay
su sach » so sach, vu sach
mang xa » lang xa, mang may, mang cua
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
xa hanh » xa thanh, xa khanh, va hanh
cua tre » cuu tre, cua triet, dua tren
va cam » va cham, va cac, va cao
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 y ((mang xa) or (dang xay)) hoi. hieu va cam tuc xa hanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((mang xa) OR (dang xay)) hoi. hieu va cam tuc xa hanh vi ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sach y ((mang xa) or (dang xay)) hoi. hieu va cam tuc xa hanh vi ((cua tre) or (cua te))*.