Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, thong cong, hang cong
vien manh » tien manh, vien canh, vien nganh
chinh can » chinh ca, chinh ban, chinh cau
hoc vien » hoc hien, hoc viet, hoc tieng
trinh va » trinh van, trinh vat, trinh ve
cong dan » cong san, cong tan, huong dan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc vien manh - hanh trinh va nhung cong dan ((phan cau) or (chinh can))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc vien manh - hanh trinh va nhung cong dan ((phan cau) OR (chinh can)).
• Adding a wildcard symbol may retrieve word variants: hoc vien manh - hanh trinh va nhung cong dan ((phan cau) or (chinh can))*.