Perhaps you should try some spelling variations:
sach thuat » sach tham, dich thuat, cac thuat
thuat nang » thuat bang, thuat mang, thuat trang
te sach » toc sach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh
lai cua » lai chau, thai cua
hai cua » thai cua, hoi cua, hai quan
x hoi » xa hoi, o hoi, x ho

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 thuat nang x hoi. hieu ve pham duc va hanh ((((lai cua) OR (hai cua))) or (dai cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach thuat nang x hoi. hieu ve pham duc va hanh ((((lai cua) OR (hai cua))) OR (dai cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach thuat nang x hoi. hieu ve pham duc va hanh ((((lai cua) OR (hai cua))) or (dai cua)) triet".
• Adding a wildcard symbol may retrieve word variants: te sach thuat nang x hoi. hieu ve pham duc va hanh ((((lai cua) OR (hai cua))) or (dai cua)) triet*.