Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh thuc » trinh tu, trinh thi
khoan khoa » khuan khoa, khoa khoa, toan khoa
khoa thong » hoa thong, thoai thong, pho thong
thuoc cach » thuoc sach, thuc cach, truoc cach
cach khong » cach phong, cac phong, bach khang
khong phap » chong phap, khong phai, phuong phap
phap thong » phap phong, phap chong, pho thong
thu thuoc » tu thuoc, thu thuc, tru thuoc
thuc cac » thuc cach, tuc cac, phuc cac
sach thu » sach thue, sach thieu, sach tham
te hanh » te thanh, tu hanh, ve hanh
vu sach » vu bach, su sach, vu khach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( te hanh trinh thuc cac khoan khoa thong ) or ( vu sach thu thuoc cach khong phap thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( te hanh trinh thuc cac khoan khoa thong ) OR ( vu sach thu thuoc cach khong phap thong )).
• Adding a wildcard symbol may retrieve word variants: (( te hanh trinh thuc cac khoan khoa thong ) or ( vu sach thu thuoc cach khong phap thong ))*.