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
dan khong » dai khong, dan phong, dao khong
chuc danh » chuc nganh, thuc hanh, chuc nang
danh khoa » doanh khoa, anh khoa, danh hoa
khoa phau » hoa phan, khoa kham, khoa than
thuc dan » thuc hanh, hoc dan, thuc vat
khong he » khong khi, hong ha, khong _
su sach » so sach, vu sach
da chuc » di chuc, don chuc, gia chuc
cac da » cac dan, cac dai, cac dac

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 dan khong he thong ) or ( tu cac da chuc danh khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach tham thuc dan khong he thong ) OR ( tu cac da chuc danh khoa phau thong )).
• Adding a wildcard symbol may retrieve word variants: (( su sach tham thuc dan khong he thong ) or ( tu cac da chuc danh khoa phau thong ))*.