Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
nham thu » nham thuc, nam thu, pham thu
va hanh » van hanh, va thanh, va danh
va nham » va cham, va tham, va nha
hieu va » lieu va, hieu qua
su sach » so sach, vu sach
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
thu va » thuc va, thue va, tu 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) or (toc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu va nham thu va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (toc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu va nham thu va hanh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (toc sach)) ky ((nang xa) OR (lang xa)) hoi. hieu va nham thu va hanh vi cua triet*".