Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
lang hoa » hang hoa, lang ha, nang hoa
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, nam thu, nam tu
va danh » va dinh, va dan, dia danh
ky lang » ky nang, ky dang, ky tang
hoa hoi » khoa hoi, hoa hoc, hoa doi
hai cua » thai cua, dai cua, hoi cua
va hanh » van hanh, va thanh, ban hanh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky lang hoa hoi. hieu van ((nam thuc) or (am thuc)) ((va hanh) or (va danh)) hai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky lang hoa hoi. hieu van ((nam thuc) OR (am thuc)) ((va hanh) OR (va danh)) hai cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sac ky lang hoa hoi. hieu van ((nam thuc) or (am thuc)) ((va hanh) or (va danh)) hai cua triet*.