Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
xa thanh » va thanh, ha thanh, ta thanh
thanh de » hanh de, thanh ve, thanh do
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va nham » va cham, va tham, va nha
thuc xa » thuc xay, tuc xa, thuc va
co hoi » co hoc
de hoa » de khoa, de hoan, do hoa

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 (thu hoach)) ky nang ((co hoi) or (co loi)). hieu va nham thuc xa thanh de hoa viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky nang ((co hoi) OR (co loi)). hieu va nham thuc xa thanh de hoa viet.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky nang ((co hoi) or (co loi)). hieu va nham thuc xa thanh de hoa viet*.