Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
sach tu » sach thu, cach tu, sach ty
hieu va » lieu va, hieu qua
cac xuc » cam xuc, cac nuoc, chat xuc
va hanh » van hanh, va thanh, va danh
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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 tu) or (sach thue)) nang x hoi. hieu va cac xuc ((va hanh) or (ban hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach tu) OR (sach thue)) nang x hoi. hieu va cac xuc ((va hanh) OR (ban hanh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu ((sach tu) or (sach thue)) nang x hoi. hieu va cac xuc ((va hanh) or (ban hanh)) vi cua triet*.