Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
cua triet » cua viet, su triet, va triet
cau tren » cu tren, dau tren, ca tren
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thieu nang xa hoi. hieu ve pham duc va hanh vi ((cau tren) OR (cua triet))~.
• Adding a wildcard symbol may retrieve word variants: tu sach thieu nang xa hoi. hieu ve pham duc va hanh vi ((cau tren) or (cua triet))*.