Perhaps you should try some spelling variations:
khoan phai » khong phai, khoa phau, khoan hoi
phai thong » phap thong, phai tuong, phan thong
kham thong » khap thong, khau thong, pham thuong
hoach thu » hoach thay, doanh thu, hoach su
cach khoa » bach khoa, cac khoa, anh khoa
khoa kham » kho khan, khoa than
sach tai » sach bai, sach tham, sach dao
tue cach » tu cach, thuc cach, ve cach
thu tue » thu thue, thu tuc, thu tu
tue cac » tu cac, tuc cac, te cac
tu sach » thu sach, su sach, te 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 tue cac khoan phai thong ) or ( tu sach tai tue cach khoa kham thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hoach thu tue cac khoan phai thong ) OR ( tu sach tai tue cach khoa kham thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hoach thu tue cac khoan phai thong ) or ( tu sach tai tue cach khoa kham thong ))*.