Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
doc sach » toc sach, nuoc sach, dac sac
hoc sach » hoc sinh, hoc cac, hoc anh
phat duc » pham duc, phan duc, phan duoc
dinh lam » dinh van, tinh lao
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc sach) or (hoc sach)) ky lang xa hoi. hieu va phat duc va dinh lam ((cua triet) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc sach) OR (hoc sach)) ky lang xa hoi. hieu va phat duc va dinh lam ((cua triet) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((doc sach) or (hoc sach)) ky lang xa hoi. hieu va phat duc va dinh lam ((cua triet) or (cua te))*.