Perhaps you should try some spelling variations:
pham thuoc » pham thuc, phap thuoc, pham thuong
thuoc sach » hoc sach, nuoc sach, thuat sach
phap thong » phap phong, phap chong, pho thong
sach tren » sach tien, sach tranh
tren thuc » trien thuc, tron thuc, trinh thuc
hanh khoa » hang khoa, anh khoa, hanh hoa
khoa hoc » hoa hoc
hoc thon » hoc thong, hoa thon, hoc than
tac pham » thuc pham, san pham
nha phap » nha phat, pham phap, chap phap
vu sach » vu bach, su sach, vu khach
tu tac » tu trac, tu tai, tu cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( vu sach tren thuc hanh khoa hoc thon ) or ( tu tac pham thuoc sach nha phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( vu sach tren thuc hanh khoa hoc thon ) OR ( tu tac pham thuoc sach nha phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( vu sach tren thuc hanh khoa hoc thon ) or ( tu tac pham thuoc sach nha phap thong ))*.