Perhaps you should try some spelling variations:
nguoi doanh » nguoi dan, nguoi thanh, nguoi lanh
thuoc sinh » hoc sinh, thu sinh, thuoc sach
doanh khoa » toan khoa
phap thong » phap phong, phap chong, pho thong
bai thuoc » ban thuoc, bai hoc, cay thuoc
sinh hoat » sinh hoc, sinh vat
ten nguoi » tren nguoi, den nguoi, dien nguoi
khoa phap » khoa phau, khoan phai, khong phap
sach bai » sach dao, cac bai, sach xa
sach ten » sach tien, sach tren, sach tet
tu sach » thu sach, te sach, tu cach
hoat he » hoa he, hoat ho, thuat he
su sach » so sach, vu sach

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 bai thuoc sinh hoat he thong ) OR ( su sach ten nguoi doanh khoa phap thong ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( tu sach bai thuoc sinh hoat he thong ) OR ( su sach ten nguoi doanh khoa phap thong ))".
• Adding a wildcard symbol may retrieve word variants: (( tu sach bai thuoc sinh hoat he thong ) OR ( su sach ten nguoi doanh khoa phap thong ))*.