Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
chieu xanh » chieu sach, chieu sang, chieu tinh
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
dan toan » van toan, manh toan, xuan toan
dan than » dan chan, ban than, van than
sinh va » sinh vat, tinh va, dinh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu xanh - hanh ((tinh cua) or (sinh va)) thong cong ((dan toan) or (dan than)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh ((tinh cua) OR (sinh va)) thong cong ((dan toan) OR (dan than)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh ((tinh cua) or (sinh va)) thong cong ((dan toan) or (dan than)) cau*.