Perhaps you should try some spelling variations:
khau thong » khau thuong, khap thong, khau tong
phap thong » phap phong, phap chong, pho thong
hoach thu » hoach thay, doanh thu, hoach su
khoa phap » khoa phau, khoan phai, khong phap
cach khoa » bach khoa, cac khoan, anh khoa
khoa khau » khoa kham, khoa phau, khoa chau
thu thue » thu thuy, thu thuc, thuc thuc
thue cac » thuyet cac, thien cac, thieu cac
cac khoa » cac khoan, cac khoi, dac khoa
sach tai » sach bai, sach tham, sach dao
tue cach » tu cach, thuc cach, ve cach
su sach » so sach, vu sach
tai tue » tri tue, tai tu, tai tieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hoach thu thue cac khoa phap thong ) or ( su sach tai tue cach khoa khau thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach thu thue cac khoa phap thong ) OR ( su sach tai tue cach khoa khau thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach thu thue cac khoa phap thong ) or ( su sach tai tue cach khoa khau thong ))*.