Perhaps you should try some spelling variations:
thuc dung » thuoc dung, thuy dung, tuc dung
nham thuc » nhan thuc, nam thuc, nham thu
dung sinh » duong sinh, dang sinh, dung ninh
cua triet » cua viet, su triet, va triet
te sach » toc sach
ky lang » ky nang, ky dang, tay lang
ky tang » ky nang, ky dang, kho tang
hieu va » lieu va, hieu qua
va nham » va cham, va tham, va nha
sinh vi » sinh li, sinh va, dinh vi
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((ky lang) OR (ky tang)) xa hoi. hieu va nham thuc dung sinh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ky lang) OR (ky tang)) xa hoi. hieu va nham thuc dung sinh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ((ky lang) OR (ky tang)) xa hoi. hieu va nham thuc dung sinh vi cua triet*.