Perhaps you should try some spelling variations:
bach khang » bac thang, bach dang
tham thuoc » pham thuoc, tham thuc, nha thuoc
thuoc sach » hoc sach, nuoc sach, thuat sach
cach thuc » anh thuc, cac thu
thuc thuc » hoc thuc
thuc bach » truc bach, thuc cach, thuc hanh
sach tham » sach nha
sach khoa » bach khoa, sach nha, anh khoa
phu thong » pho thong, phap thong, khau thong
thu cach » thuc cach, thu canh, tu cach
khoa phu » khoa phau, khoa thu, hoa phu
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu cach thuc thuc bach khang _ thong ) or ( tu sach tham thuoc sach khoa phu thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu cach thuc thuc bach khang _ thong ) OR ( tu sach tham thuoc sach khoa phu thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu cach thuc thuc bach khang _ thong ) or ( tu sach tham thuoc sach khoa phu thong ))*.