Perhaps you should try some spelling variations:
phau thong » phap thong, khau thong, phan thong
cac khong » cac phong, cat khong, cac phuong
khoa phau » hoa phan, khoa kham, khoa than
khong he » khong khi, hong ha, khong _
sach tri » sach tai, sach tren, sach truc
cac khoa » cac khoan, cac khoi, dac khoa
te sach » toc sach
moi cac » voi cac, hoi cac, mo cac
tri moi » tri mot, thi moi, tri doi
dao le » dao ve, hao le
do le » do ke

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te sach tri moi cac khoa phau thong ) or ( te sach ((dao le) OR (do le)) cac khong he thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te sach tri moi cac khoa phau thong ) OR ( te sach ((dao le) OR (do le)) cac khong he thong ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( te sach tri moi cac khoa phau thong ) or ( te sach ((dao le) OR (do le)) cac khong he thong ))*".