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 han
hoc thieu » toc thieu, hoc hien
cac dang » cao dang, cac dan, cac cong
lap bang » lap ban, cao bang, mat bang
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 - thanh trung ((cac dang) or (lap bang)) cong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh trung ((cac dang) OR (lap bang)) cong trinh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh trung ((cac dang) or (lap bang)) cong trinh toan cao*.