Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
khoan khau » khoanh khac, khoa kham, khoa phau
khau thong » khau thuong, khap thong, khau tong
than thong » than thuong, toan thong, tran thong
trinh cuu » trinh cau, trinh cua, trinh chu
khoi than » khoa than, khoi thuat, khai thac
thu hanh » thuc hanh, thu thanh, thuy hanh
sach dao » lanh dao
dao thuc » dan thuc, dao tuc, do thuc
thuc cac » thuc cach, tuc cac, phuc cac
cac khoi » cac thoi, cach thoi, hoc khoi
cuu cac » cua cac, cuu dac
tu sach » thu sach, su sach, te sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( thu hanh trinh cuu cac khoan khau thong ) or ( tu sach dao thuc cac khoi than thong ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( thu hanh trinh cuu cac khoan khau thong ) OR ( tu sach dao thuc cac khoi than thong )).
• Adding a wildcard symbol may retrieve word variants: (( thu hanh trinh cuu cac khoan khau thong ) or ( tu sach dao thuc cac khoi than thong ))*.