Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, phap tieng
sach giai » sach giao, cac giai, sach bai
giai khat » giai phap, giai phau
khoa phap » khoa phau, khoan phai, khong phap
khac tren » khac triet, khac trong, hoc tren
tren thuc » trien thuc, tron thuc, trinh thuc
hanh khoa » hang khoa, anh khoa, hanh hoa
pho thong » he thong
khat tac » khai thac, thuat tac, khau tai
tac khoa » dac khoa, cac khoa, gac khoa
khoa pho » khoa phu, khoa khoa, khoa phau
tu sach » thu sach, su sach, te sach
vu khac » vu kham, vu khanh, bui khac

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

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