Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
phau thong » khau thong, phan thong, phan thuong
khoa phau » hoa phan, khoa kham, khoa than
khoe phap » khong phap, hoc phap, che phap
sach dao » lanh dao
cac khoa » cac khoan, cac khoi, dac khoa
sanh bai » sach bai, anh bai, san bai
cac khoe » cac khoi, cac khoan, suc khoe
tu sach » thu sach, su sach, te sach
so sanh » do sanh
bai hoc » dai hoc
hoc cac » hoc cao
dao tu » dao tuc, dao tru, tao tu

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 dao tu cac khoa phau thong ) or ( so sanh bai hoc cac khoe phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach dao tu cac khoa phau thong ) OR ( so sanh bai hoc cac khoe phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach dao tu cac khoa phau thong ) or ( so sanh bai hoc cac khoe phap thong ))*.