Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
phap tang » phap nang, phap tieng
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu, hoc hien
toan tap » toan ban
ha tong » han tong, ha dong, ha long
ha tang » cao tang, kho tang, ha giang

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 chinh ((ha tong) or (((ha tang) OR (phap tang)))) cong manh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh chinh ((ha tong) OR (((ha tang) OR (phap tang)))) cong manh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh chinh ((ha tong) or (((ha tang) OR (phap tang)))) cong manh toan tap".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh chinh ((ha tong) or (((ha tang) OR (phap tang)))) cong manh toan tap*.