Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
manh toan » thanh toan, anh tuan, tinh toan
doc hieu » toc thieu, hoc thieu, hoc hien
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
dan than » dan chan, ban than, van than

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 ((tang cua) or (hang cua)) thong cong ((dan than) or (manh toan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh ((tang cua) OR (hang cua)) thong cong ((dan than) OR (manh toan)) cao.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh ((tang cua) or (hang cua)) thong cong ((dan than) or (manh toan)) cao*.