Perhaps you should try some spelling variations:
thieu xang » thieu khang, thieu quang, chieu sang
va truyen » hoa truyen, co truyen, di truyen
va trien » va thiet, va tuyen, va tieng
su sach » so sach, vu sach
xang xa » lang xa, mang xa, ang xa
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
va dat » va dao, va dau, va dap
ca dan » cac dan, ca dao
nuoc » quoc, duoc, ngoc

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 thieu xang xa hoi. hieu va dat nuoc ((va hanh) or (ca dan)) di ((va trien) OR (va truyen))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thieu xang xa hoi. hieu va dat nuoc ((va hanh) OR (ca dan)) di ((va trien) OR (va truyen)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach thieu xang xa hoi. hieu va dat nuoc ((va hanh) or (ca dan)) di ((va trien) OR (va truyen))".
• Adding a wildcard symbol may retrieve word variants: su sach thieu xang xa hoi. hieu va dat nuoc ((va hanh) or (ca dan)) di ((va trien) OR (va truyen))*.