Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
tran van » luan van
cong anh » cong danh, dong anh, hong anh
tuan cau » toan cau, quan cau, tuan cu
tran va » trang va, tranh va, toan va

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 - tan ((tran va) OR (tran van)) dung cong anh tuan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - tan ((tran va) OR (tran van)) dung cong anh tuan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - tan ((tran va) OR (tran van)) dung cong anh tuan cau*.