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

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 phat thuat sinh hoat khau cong ) or ( vu sach tri thuoc dang khoa he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach phat thuat sinh hoat khau cong ) OR ( vu sach tri thuoc dang khoa he thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach phat thuat sinh hoat khau cong ) or ( vu sach tri thuoc dang khoa he thong ))*.