Perhaps you should try some spelling variations:
dang xay » dang van, van xay
tinh vi » trinh vi, tinh voi, tinh va
sach ty » sach y, sach tu, sach thu
su sach » so sach, vu sach
dang xa » lang xa, dang ha, dang va
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
luc va » tuc va, loc va
vi cua » vai cua, di 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 ty ((dang xa) OR (dang xay)) hoi. lieu va cam ((luc va) or (duc va)) tinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty ((dang xa) OR (dang xay)) hoi. lieu va cam ((luc va) OR (duc va)) tinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ty ((dang xa) OR (dang xay)) hoi. lieu va cam ((luc va) or (duc va)) tinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: su sach ty ((dang xa) OR (dang xay)) hoi. lieu va cam ((luc va) or (duc va)) tinh vi cua tre*.