Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, dua tren
tinh di » tinh doi, trinh di, tinh da
va tinh » may tinh
su sach » so sach, vu sach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ve coc » ve cuoc, ve cac
luc va » duc va, tuc va, loc va
ve co » vo co, va co, de co

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