Perhaps you should try some spelling variations:
nang chat » nang phat, nang cham, nang cao
chat hoc » chat hoa, chat thom, cho hoc
cam thuc » am thuc, nam thuc, cam thu
tu sach » thu sach, su sach, te sach
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
su tien » su kien, tu tieng, dau tien
su hien » su kien, thu hien, nhu hien
y nang » ky nang, ly nang, v nang
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y nang chat hoc. lieu va cam thuc va hanh vi ((su tien) or (su hien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang chat hoc. lieu va cam thuc va hanh vi ((su tien) OR (su hien)).
• Adding a wildcard symbol may retrieve word variants: tu sach y nang chat hoc. lieu va cam thuc va hanh vi ((su tien) or (su hien))*.