Perhaps you should try some spelling variations:
zhang chuan » khang chan, chung chuan, khang khuan
chuan thoai » than thoai, chuan hoa, chuan tham
thoai thong » thoai trong, thong thong, toan thong
khoanh khac » khoa khac
thuc zhang » thuoc khang, thuc hanh, thuc trang
cac khoanh » cac khoan, cac thanh, cac doanh
khac thong » khac thuong, khac trong, khap thong
sach dao » lanh dao
tu sach » thu sach, su sach, te sach
sach va » sach xa, sach ha, sach nha
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 va thuc zhang chuan thoai thong ) or ( tu sach dao tu cac khoanh khac thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach va thuc zhang chuan thoai thong ) OR ( tu sach dao tu cac khoanh khac thong )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach va thuc zhang chuan thoai thong ) or ( tu sach dao tu cac khoanh khac thong ))*.