Perhaps you should try some spelling variations:
doanh khoan » doanh khoa, doanh hoan, doanh nhan
khan thong » khap thong, khau thong, nhan thong
khoan phai » khong phai, khoa phau, khoan hoi
phai thong » phap thong, phai tuong, phan thong
sach thai » sach tham, sac thai, sach tai
thai truc » thai thuc, thai tuc, thi truc
truc anh » truc nano, truc tinh, truc bach
kho khan » khoa kham, khoa than
hoach do » hoach de, hoach du, hoach hoi
tu sach » thu sach, su sach, te sach
anh kho » anh khoa, anh tho, anh cho
do tri » do thi, bo tri, do tai

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 thai truc anh kho khan thong ) or ( thu hoach do tri doanh khoan phai thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach thai truc anh kho khan thong ) OR ( thu hoach do tri doanh khoan phai thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach thai truc anh kho khan thong ) or ( thu hoach do tri doanh khoan phai thong ))*.