Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh cua » tinh cua, trinh luat, trinh quan
cong cong » cong dong, trong cong, dung cong
khoan cam » khoa cam, phan cam, thuan cam
cong san » cong tac
khoan va » doan va, khoa ma, nhan va
hoc van » hoc dan, hoc va, hoc vat
ho va » ho van, nho va, tho va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho va) or (hoc van)) tinh - hanh trinh cua cong cong san ((khoan cam) or (khoan va))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho va) OR (hoc van)) tinh - hanh trinh cua cong cong san ((khoan cam) OR (khoan va)).
• Adding a wildcard symbol may retrieve word variants: ((ho va) or (hoc van)) tinh - hanh trinh cua cong cong san ((khoan cam) or (khoan va))*.