Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
quan trong » gian trong
hoc thieu » toc thieu, hoc hien
hanh tang » hanh trang, anh tang, hanh mang
tang quan » tang luan, nang quan, tong quan
hach toan » thanh toan, manh toan
pham toan » pham tuan, pham tan, phap toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh tang quan trong cong ((hach toan) or (pham toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh tang quan trong cong ((hach toan) OR (pham toan)) cau*.