Perhaps you should try some spelling variations:
thanh tinh » thanh binh, nhanh tinh, than kinh
su triet » su viet, su tien, ve triet
sach ty » sach tu, sach thu, xach tay
hieu va » lieu va, hieu qua
nam xua » nam cua, nam mua, nam qua
xua gia » cua gia, qua gia, xua kia
tinh su » trinh su, hinh su, tinh tu
nang o » nang co, nang ho, nang ro
va nam » van nam, ha nam, va nay
o hoi » co hoi, o hoc, o hai

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)) nang o hoi. hieu va nam xua gia thanh tinh su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang o hoi. hieu va nam xua gia thanh tinh su triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) nang o hoi. hieu va nam xua gia thanh tinh su triet*.