Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trong » hanh trang, anh trong, chinh trong
hinh trong » chinh trong, dinh trong, sinh trong
hoc thieu » toc thieu, hoc hien
dung cong » dung trong
cong van » cong vang, cong san, song van
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 trong) or (hinh trong)) su dung cong van ((toan cau) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((hanh trong) OR (hinh trong)) su dung cong van ((toan cau) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - ((hanh trong) or (hinh trong)) su dung cong van ((toan cau) or (toan ban))*.