Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
thuc dan » thuc hanh, hoc dan
nang co » nang cao, nang doc, nang noi
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, bai cua
lai cua » dai cua, hai cua, lai chau
y nang » ky nang, ly nang, v nang
co hoi » co hoc, co loi
va am » va lam, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y nang co hoi. hieu va am ((thuc dan) OR (thuc vat)) danh ((vai cua) or (lai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y nang co hoi. hieu va am ((thuc dan) OR (thuc vat)) danh ((vai cua) OR (lai cua)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach y nang co hoi. hieu va am ((thuc dan) OR (thuc vat)) danh ((vai cua) or (lai cua)) triet*".