Perhaps you should try some spelling variations:
tham thuoc » pham thuoc, tham thuc, nha thuoc
hoach tham » hoac tham, hoach thay, sach tham
thuoc bach » thuoc sach, thuoc ban, truc bach
pho thong » he thong
khoa khoi » khoa hoi, khoa khoa, thoat khoi
sach nam » sach nay, sach tham, sach nang
nam thuc » nam thuoc, am thuc, nam thu
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
khoa pho » khoa phu, khoa khoa, khoa phau
tu sach » thu sach, su sach, te sach
khong » phong

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 nam thuc anh khoa pho thong ) or ( thu hoach tham thuoc bach khoa khoi khong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach nam thuc anh khoa pho thong ) OR ( thu hoach tham thuoc bach khoa khoi khong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach nam thuc anh khoa pho thong ) or ( thu hoach tham thuoc bach khoa khoi khong ))*.