Perhaps you should try some spelling variations:
doan manh » doan minh, hoang manh, tran manh
thuc doan » thuc dan, thuc day, thu hoan
manh vai » manh hai, manh va, manh khai
nam thuc » nam thuoc, am thuc, nam thu
tu sach » thu sach, su sach, tu cach
hieu va » lieu va, hieu qua
ca viet » va viet, co viet, hoa viet
hieu ve » hieu van
te sach » toc sach
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) OR (te sach)) ky nang x hoi. ((hieu ve) or (hieu va)) nam thuc doan manh vai ca viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky nang x hoi. ((hieu ve) OR (hieu va)) nam thuc doan manh vai ca viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ky nang x hoi. ((hieu ve) or (hieu va)) nam thuc doan manh vai ca viet*".