Perhaps you should try some spelling variations:
nha hang » nha sang, ngan hang, nhat hanh
sach ty » sach tu, sach thu, xach tay
hang vi » hang va, hanh vi, hang di
luc nha » luc nhat, luc nhan, luc ha
cu tren » tu tren, dua tren
xang xa » lang xa, mang xa, ang xa
ve cau » ke cau, va cau, le cau
ve cac » va cac, vien cac
vi cu » vi su, vi xu, vi du

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 ty) or (sach y)) xang xa hoi. hieu ((ve cau) or (ve cac)) luc nha hang vi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) xang xa hoi. hieu ((ve cau) OR (ve cac)) luc nha hang vi cu tren.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) xang xa hoi. hieu ((ve cau) or (ve cac)) luc nha hang vi cu tren*.