Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sach ky » sac ky, sach y, sach ty
hanh di » hanh vi, hanh de, hang di
thuc va » thuc dan, thuc day
te sach » toc sach
nang ma » tang ma, sang ma, nang cao
vu kham » vu khanh
va cao » va cac, va co, va dao
ma hoi » mai hoi, xa hoi, ma hoa
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky nang ma hoi. hieu ((va cao) or (vu kham)) ((thuc va) OR (thuc vat)) hanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. hieu ((va cao) OR (vu kham)) ((thuc va) OR (thuc vat)) hanh di cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. hieu ((va cao) or (vu kham)) ((thuc va) OR (thuc vat)) hanh di cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu ((va cao) or (vu kham)) ((thuc va) OR (thuc vat)) hanh di cua triet*.