Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
hang cong » dang cong, bang cong, thong cong
hang nong » thang long, han tong
nang phat » nang suat, van phat
doc hieu » toc thieu, hoc thieu, hoc hien
cong va » dong va, cong ha, cong tac
phat tu » phan tu, pham tu, phap tu

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 - thanh cong va ((hang cong) OR (hang nong)) nang phat tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - thanh cong va ((hang cong) OR (hang nong)) nang phat tu".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - thanh cong va ((hang cong) OR (hang nong)) nang phat tu*.