Perhaps you should try some spelling variations:
hieu nganh » vien nganh, hiem ngan, hieu manh
thanh tung » thanh cong
hieu xanh » chieu xanh, hieu manh, dieu hanh
qua nhung » quan nhung, qua chung, chua nhung
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tan quan » tang quan, toan quan, van quan
quan tam » quan tai, quan am, quan nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (hieu nganh)) - thanh tung ((qua nhung) or (cua nhung)) cong tan quan tam~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu nganh)) - thanh tung ((qua nhung) OR (cua nhung)) cong tan quan tam.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu nganh)) - thanh tung ((qua nhung) or (cua nhung)) cong tan quan tam*.