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, cong hoan, dong doanh
cua dung » cua dang, cua dong, cua rung
qua dung » quang dung, su dung, qua song
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang 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 dung) or (qua dung)) cong doan ((phan cac) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien tinh - hanh tang ((cua dung) OR (qua dung)) cong doan ((phan cac) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc hien tinh - hanh tang ((cua dung) or (qua dung)) cong doan ((phan cac) or (phan dau))*.