Perhaps you should try some spelling variations:
phap chong » phap phong, phap cong, pham hong
sach tham » sach nha
tham thuy » thai thuy, pham thuy, thac thuy
thuy hanh » thuc hanh, thuy anh, thuy canh
hanh khoa » hang khoa, hanh hoa, han khoa
pho thong » he thong
sach nham » sach nha, sach han, sach ha
khoa phap » khoa phau, khoan phai, khong phap
khoa pho » khoa phu, khoa khoa, khoa phau
nham thu » nham thuc, nam thu, pham thu
anh khoa » doanh khoa, hang khoa
so sach » so sanh, bo sach, co sach
thu anh » thuy anh, thu canh, thu oanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( so sach tham thuy hanh khoa pho thong ) or ( so sach nham thu anh khoa phap chong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( so sach tham thuy hanh khoa pho thong ) OR ( so sach nham thu anh khoa phap chong )).
• Adding a wildcard symbol may retrieve word variants: (( so sach tham thuy hanh khoa pho thong ) or ( so sach nham thu anh khoa phap chong ))*.