Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach thu » sach thue, sach thieu, sach tham
dong tay » dong tai, dung tay, dong tac
dong tam » dong tai, dong nam, don tam
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va lam » van lam, va lap
luc va » duc 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 thu ((dong tay) OR (dong tam)) hoi. hieu va lam ((luc va) or (hoc va)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu ((dong tay) OR (dong tam)) hoi. hieu va lam ((luc va) OR (hoc va)) hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thu ((dong tay) OR (dong tam)) hoi. hieu va lam ((luc va) or (hoc va)) hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach thu ((dong tay) OR (dong tam)) hoi. hieu va lam ((luc va) or (hoc va)) hanh vi cua triet*.