Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
cong vang » cong lang, cong quang, cong ngang
vang toan » van toan, dang toan, quang toan
trang va » hang va
tran van » luan van
toan cau » 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 ((trang va) OR (tran van)) nhung cong vang toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((trang va) OR (tran van)) nhung cong vang toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((trang va) OR (tran van)) nhung cong vang toan cau*.