Perhaps you should try some spelling variations:
lam thuoc » nam thuoc, am thuc, cay thuoc
lam duoc » nam duoc, luat duoc, tao duoc
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
cua tre » cuu tre, cua triet, dua tren
ban vi » ban voi, ban va, ban ve
cua te » cua tu

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 ty nang xa hoi. lieu va ((lam duoc) OR (lam thuoc)) van ban vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang xa hoi. lieu va ((lam duoc) OR (lam thuoc)) van ban vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty nang xa hoi. lieu va ((lam duoc) OR (lam thuoc)) van ban vi ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang xa hoi. lieu va ((lam duoc) OR (lam thuoc)) van ban vi ((cua tre) or (cua te))*.