Perhaps you should try some spelling variations:
phau chong » phap chong, pham chuong, phap phong
khoan khau » khoanh khac, khoa kham, han khau
khau thong » khau thuong, khap thong, khau tong
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
sach tri » sach tai, sach tren, sach truc
tri thuc » tri tue
thuc cac » thuc cach, tuc cac, phuc cac
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( su sach tham thuc hanh khoa phau chong ) or ( su sach tri thuc cac khoan khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tham thuc hanh khoa phau chong ) OR ( su sach tri thuc cac khoan khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tham thuc hanh khoa phau chong ) or ( su sach tri thuc cac khoan khau thong ))*.