Perhaps you should try some spelling variations:
trinh toan » tinh toan, thanh toan, trinh han
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
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) or (nhan sinh)) cua dung cong trinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh tinh) OR (nhan sinh)) cua dung cong trinh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh tinh) or (nhan sinh)) cua dung cong trinh toan cao*.