Perhaps you should try some spelling variations:
khau thong » khau thuong, khap thong, khau tong
phau thong » phap thong, phan thong, phan thuong
sach tham » sach nha
tham thuc » nham thuc, pham thuc, tam thuc
khoa phau » hoa phan, khoa kham, khoa than
sach tren » sach tien, sach tranh
khoi khau » khoai chau, kho khan, khoa kham
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
tren thi » trien thi, tran thi, trieu thi
cac khoi » cac thoi, cac khoan, cach thoi
tu sach » thu sach, su sach, te sach
thi cac » thi cuc, tai cac, thi tac

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 tham thuc anh khoa phau thong ) or ( tu sach tren thi cac khoi khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tham thuc anh khoa phau thong ) OR ( tu sach tren thi cac khoi khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tham thuc anh khoa phau thong ) or ( tu sach tren thi cac khoi khau thong ))*.