Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
sach tham » sach nha
tham thuc » nham thuc, pham thuc, tam thuc
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa phau » hoa phan, khoa kham, khoa than
thuc sach » thuoc sach, thu sach, thuc cach
phan hong » phan cong, pham hong, phan song
toc tham » toc thai, toc cham, hoac tham
sach han » sach danh, sach nang, sach dao
han phan » than phan, hanh phan, phan phan
tu sach » thu sach, su sach, te sach
tu toc » tu hoc, tu goc, tu tot

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 hanh khoa phau thong ) or ( tu toc tham thuc sach han phan hong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tham thuc hanh khoa phau thong ) OR ( tu toc tham thuc sach han phan hong ))*.