Perhaps you should try some spelling variations:
kham thong » khap thong, khau thong, pham thuong
sach tham » sach nha
tham thuc » nham thuc, pham thuc, tam thuc
thuc bach » truc bach, thuc cach, thuoc sach
pho thong » he thong
khoa kham » kho khan, khoa than
khoa pho » khoa phu, khoa khoa, khoa phau
sach bai » sach dao, cac bai, sach xa
bai thuc » bai thuoc, bao thuc, dai thuc
thuc anh » thuc hanh, thuy anh, thu anh
anh khoa » doanh khoa, hang khoa
te sach » toc sach
tu sach » thu sach, su 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 sach tham thuc bach khoa pho thong ) or ( tu sach bai thuc anh khoa kham thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tham thuc bach khoa pho thong ) OR ( tu sach bai thuc anh khoa kham thong )).
• Adding a wildcard symbol may retrieve word variants: (( te sach tham thuc bach khoa pho thong ) or ( tu sach bai thuc anh khoa kham thong ))*.