Perhaps you should try some spelling variations:
phap thong » phap phong, phap chong, pho thong
khoa phap » khoa phau, khoan phai, khong phap
cach thuc » anh thuc, cac thu
hoc thong » hoc thuong, hoc trong, hoc hong
sach tri » sach tai, sach tren, sach truc
thi bach » thi bich, thi hanh, thi anh
anh khoa » doanh khoa, hang khoa
khoa hoc » hoa hoc
tu sach » thu sach, su sach, te sach
tri thi » tri tai, tai thi, thi thi
tu cach » tu cac
thuc vu » phuc vu, thuc va, thuc ve
vu anh » vu khanh, vu thanh

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 thi bach khoa phap thong ) or ( tu cach thuc vu anh khoa hoc thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach tri thi bach khoa phap thong ) OR ( tu cach thuc vu anh khoa hoc thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach tri thi bach khoa phap thong ) or ( tu cach thuc vu anh khoa hoc thong ))*.