Perhaps you should try some spelling variations:
sach trien » sach tien, sach tren, sach thieu
trien thuc » trien thuoc, tren thuc, trien thuat
phap thong » phap phong, phap chong, pho thong
truc thuoc » thuc thuc, tri thuoc, tu thuoc
phau thong » khau thong, phan thong, phan thuong
thuc cach » thuoc sach, truoc cach, thuc hanh
cach khoa » bach khoa, cac khoa, cac khoan
khoa phap » khoan phai, khong phap, hoa phan
sach truc » cach thuc, sach tren, sach thu
thuoc cuc » thuc cua, thuoc co, thuoc tu
khoa phau » hoa phan, khoa kham, khoa than
cuc khoa » cuu khoa, cu khoa, cac khoa
su sach » so sach, vu sach
tu sach » thu sach, te sach, tu cach

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 trien thuc cach khoa phap thong ) or ( tu sach truc thuoc cuc khoa phau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( su sach trien thuc cach khoa phap thong ) OR ( tu sach truc thuoc cuc khoa phau thong ))*.