Perhaps you should try some spelling variations:
hien tinh » khien tinh, thien tinh, dien tinh
bien tinh » bi tinh, yen tinh, diep tinh
hanh tang » hanh trang, anh tang, hanh mang
cong doan » cong dan, cong hoan, dong doanh
doan phan » doanh phan, toan phan, dan phan
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
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) OR (bien tinh)) - hanh tang ((cua dung) or (qua dung)) cong doan phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien tinh) OR (bien tinh)) - hanh tang ((cua dung) OR (qua dung)) cong doan phan lap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien tinh) OR (bien tinh)) - hanh tang ((cua dung) or (qua dung)) cong doan phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien tinh) OR (bien tinh)) - hanh tang ((cua dung) or (qua dung)) cong doan phan lap*.