Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
khoa phau » hoa phan, khoa kham, khoa than
sach tien » sach tren, sach thieu
tien thuc » trien thuc, kien thuc, bien thuc
cac khoin » cac khoan, cac khoi, cac thoi
khoin cuu » khoi cua
sach tri » sach tai, sach tren, sach truc
cac khoa » cac khoan, cac khoi, dac khoa
thuc cac » thuc cach, tuc cac, phuc cac
cuu nong » cuu cong, cuu nang, cuu tong
tu sach » thu sach, su sach, tu cach
tue cac » tu cac, tuc cac, te cac
te sach » toc sach

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 tri tue cac khoa phau thong ) or ( te sach tien thuc cac khoin cuu nong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tri tue cac khoa phau thong ) OR ( te sach tien thuc cac khoin cuu nong ))*.