Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
nam thuc » nam thuoc, am thuc, nam thu
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
hieu ve » hieu va, hieu van
hoa doi » hoa dai, hoc doi, xoa doi
hoa hoi » khoa hoi, hoa hoc, hoc hoi
ky tang » ky nang, ky dang, kho tang
ve nam » he nam, va nam, le nam
te san » te ban, ke san, tu san
te sac » te sach, te cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) OR (te san)) ky tang ((hoa hoi) or (hoa doi)). hieu ve nam thuc va hanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te san)) ky tang ((hoa hoi) OR (hoa doi)). hieu ve nam thuc va hanh thai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) OR (te san)) ky tang ((hoa hoi) or (hoa doi)). hieu ve nam thuc va hanh thai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) OR (te san)) ky tang ((hoa hoi) or (hoa doi)). hieu ve nam thuc va hanh thai cua triet*.