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

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 ky tang ((hoa hoi) or (hoc doi)). hieu he nam thuc va hanh thai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang ((hoa hoi) OR (hoc doi)). hieu he nam thuc va hanh thai cua triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky tang ((hoa hoi) or (hoc doi)). hieu he nam thuc va hanh thai cua triet*.