Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
phan thong » phan thuong, phan hong, phan tong
sach tham » sach nha
tham thuc » nham thuc, pham thuc, tam thuc
khoa phan » hoa phan, khoa than, khoa phau
tri thuoc » tri thuc, tri hoc, tin thuoc
thuoc cac » thuoc cuc, thuoc cao, thuoc dac
thuc cac » thuc cach, tuc cac, phuc cac
cac khoa » cac khoan, cac khoi, dac khoa
han phap » hanh phap, phan phap, ban phap
su sach » so sach, vu sach
cac tri » cac tro, cac toi, cac thi
cac han » cac nhan, cac phan, cac dan

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 cac khoa phan thong ) or ( tu cac tri thuoc cac han phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tham thuc cac khoa phan thong ) OR ( tu cac tri thuoc cac han phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tham thuc cac khoa phan thong ) or ( tu cac tri thuoc cac han phap thong ))*.