Perhaps you should try some spelling variations:
nam thuoc » nam thuc, nam thu, nha thuoc
thuoc va » thuc va, thuoc ma, thuong va
thanh ve » hanh ve, thanh va, thanh vien
va thanh » gia thanh, ban thanh, va tinh
luu tre » luu tru, luy tre
tu sach » thu sach, su sach, te sach
hieu he » hieu ve, hiem he, hieu le
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
he nam » ha nam, nghe nam

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 xa hoi. hieu he nam thuoc va thanh ve ((luu tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu hoach)) ky nang xa hoi. hieu he nam thuoc va thanh ve ((luu tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu hoach)) ky nang xa hoi. hieu he nam thuoc va thanh ve ((luu tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu hoach)) ky nang xa hoi. hieu he nam thuoc va thanh ve ((luu tre) OR (cuu tre))*.