Perhaps you should try some spelling variations:
hien tinh » khien tinh, thien tinh, bien tinh
hanh tang » hanh trang, anh tang, hanh mang
cong doan » cong dan, dong doanh, cong san
cong hoan » cong hoa, dong hoa, cong san
cua dang » cua cong, cua ban
cua dong » chua dong, cua cong, cua nong
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien tinh - hanh tang ((cua dang) or (cua dong)) ((cong doan) OR (cong hoan)) phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh tang ((cua dang) OR (cua dong)) ((cong doan) OR (cong hoan)) phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien tinh - hanh tang ((cua dang) or (cua dong)) ((cong doan) OR (cong hoan)) phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh tang ((cua dang) or (cua dong)) ((cong doan) OR (cong hoan)) phan lap*.