Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
hanh hai » thanh hai, nhanh hai, hang hai
dan hanh » dang hanh, dan khanh, dan thanh
thuc dan » thuc hanh, hoc dan, thuc vat
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va, hieu van
so sach » so sanh, bo sach, co sach
hai cua » thai cua, dai cua, hoi cua
su sach » vu sach
ve nam » he nam, va nam, le nam

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 (so sach)) ky ((nang x) or (lang xa)) hoi. hieu ve nam thuc dan hanh hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky ((nang x) OR (lang xa)) hoi. hieu ve nam thuc dan hanh hai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky ((nang x) or (lang xa)) hoi. hieu ve nam thuc dan hanh hai cua triet*".