Perhaps you should try some spelling variations:
nam thuoc » nam thu, nha thuoc, cay thuoc
hanh manh » hanh mang, lanh manh, hoang manh
nam thuc » am thuc, nam thu, nam tu
manh vai » manh hai, manh va, manh khai
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
ca viet » va viet, co viet, hoa viet
vai ca » vai cac, vai cua, bai ca
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: tu sach ky nang x hoi. hieu va ((nam thuc) OR (nam thuoc)) hanh manh vai ca viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu va ((nam thuc) OR (nam thuoc)) hanh manh vai ca viet".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang x hoi. hieu va ((nam thuc) OR (nam thuoc)) hanh manh vai ca viet*.