Perhaps you should try some spelling variations:
su sach » so sach, vu sach
cua tre » cua te, cua triet, dua tren
tinh vi » trinh vi, tinh voi, tinh va
va tinh » may tinh
hieu va » lieu va, hieu qua
cuu tre » cau tren, cau treo
dung ha » dung va, dung he, dung khoa
dang ha » dong ha, lang ha, tang ha
luc va » duc va, tuc va, loc va
va coc » va cuoc, va cac, va hoc

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 ((dang ha) OR (dung ha)) hoi. hieu va coc luc va tinh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y ((dang ha) OR (dung ha)) hoi. hieu va coc luc va tinh vi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y ((dang ha) OR (dung ha)) hoi. hieu va coc luc va tinh vi ((cua tre) or (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: su sach y ((dang ha) OR (dung ha)) hoi. hieu va coc luc va tinh vi ((cua tre) or (cuu tre))*.