Perhaps you should try some spelling variations:
trong thuoc » trong thuc, trung thuoc, trong thuong
thuc thuoc » thuc thuc, truc thuoc, thu thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
phap thong » phap phong, phap chong, pho thong
sanh trong » sinh trong, anh trong, hanh trong
thuy duong » huy dong
cach thuc » anh thuc, cac thu
sach khoa » bach khoa, sach nha, anh khoa
khoa phap » khoa phau, khoan phai, khong phap
khoa thuy » khoa thu, khoi thuy, khoa thuoc
thu sanh » thu canh, thu san, thu sinh
te cach » ve cach, te sach, tu cach

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( te cach thuc thuoc sach khoa phap thong ) or ( thu sanh trong thuoc sach khoa thuy duong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te cach thuc thuoc sach khoa phap thong ) OR ( thu sanh trong thuoc sach khoa thuy duong )).
• Adding a wildcard symbol may retrieve word variants: (( te cach thuc thuoc sach khoa phap thong ) or ( thu sanh trong thuoc sach khoa thuy duong ))*.