Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
cac tuc » cac toc, cac tu, cac tac
dan chi » danh chi, dan thi, van chi
chi cua » chi cuc, khi cua, cuoi cua
y nang » ky nang, ly nang, v nang
me hoi » le hoi
xa dan » ca dan, xa dai, va dan

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 y nang ((me hoi) or (ma hoa)). hieu va cac tuc xa dan chi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((me hoi) OR (ma hoa)). hieu va cac tuc xa dan chi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((me hoi) or (ma hoa)). hieu va cac tuc xa dan chi cua triet*.