Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
trinh toan » tinh toan, thanh toan, trinh quan
hoc thieu » toc thieu, hoc hien
trinh han » trinh quan
cac dang » cao dang, cac dan, cac cong
mat bang » cao bang

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 - thanh trung ((cac dang) or (mat bang)) cong ((trinh toan) OR (trinh han)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung ((cac dang) OR (mat bang)) cong ((trinh toan) OR (trinh han)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - thanh trung ((cac dang) or (mat bang)) cong ((trinh toan) OR (trinh han)) ban*".