Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
trinh han » trinh quan
hang cong » dang cong, bang cong, thanh cong
hang nong » thang long, han tong
tinh cua » trinh cua, sinh cua, tinh chat
san toan » van toan, dan toan, manh toan
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: hoc thieu xanh - hanh ((tinh cua) or (trinh han)) ((hang cong) or (hang nong)) san toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((tinh cua) OR (trinh han)) ((hang cong) OR (hang nong)) san toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((tinh cua) or (trinh han)) ((hang cong) or (hang nong)) san toan cao*.