Perhaps you should try some spelling variations:
thuat sinh » thuat kinh, thuat hinh, thuat dinh
sach phau » sach phat, sach phap, sach nha
sinh hoat » sinh hoc, sinh vat
hoat khau » xuat khau, hat chau, han khau
khau cong » khu cong, khau tong, khach cong
thuc dang » thuoc dang, thuc dan, thuc dung
dang khoa » dung khoa, hang khoa, dang khoi
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
te sach » toc sach
vu sach » vu bach, su sach, vu khach
khoa he » hoa he, khoa hoc, khong he

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 phau thuat sinh hoat khau cong ) or ( vu sach tri thuc dang khoa he (thong OR trong) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach phau thuat sinh hoat khau cong ) OR ( vu sach tri thuc dang khoa he (thong OR trong) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( te sach phau thuat sinh hoat khau cong ) or ( vu sach tri thuc dang khoa he (thong OR trong) ))".
• Adding a wildcard symbol may retrieve word variants: (( te sach phau thuat sinh hoat khau cong ) or ( vu sach tri thuc dang khoa he (thong OR trong) ))*.