Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
hanh sinh » hanh tinh, hanh dinh, hinh sinh
cua thong » cua thuong, cua khong, suat thong
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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 - hanh sinh ((cua thong) OR (cua tong)) cong van toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh sinh ((cua thong) OR (cua tong)) cong van toan cao".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh sinh ((cua thong) OR (cua tong)) cong van toan cao*.