Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
thien van » thi van
nam thuc » nam thuoc, am thuc, nam thu
ta thanh » tai thanh, va thanh, ha thanh
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nam tuc » nam truc, nam tu, nam thuoc
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
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: so sach ky nang x hoi. thien van ((nam tuc) OR (nam thuc)) ta thanh vien ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x hoi. thien van ((nam tuc) OR (nam thuc)) ta thanh vien ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang x hoi. thien van ((nam tuc) OR (nam thuc)) ta thanh vien ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x hoi. thien van ((nam tuc) OR (nam thuc)) ta thanh vien ((cuu tre) or (cua tre))*.