Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
cang thang » cong thanh, dang thanh
lang trong » dung trong, cong trong, dong trong
nang huong » nang thuong, nang luong, hang thuong
hoc thieu » toc thieu, hoc hien
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap
da nang » cam nang, kha nang, cao nang

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 - ((cang thang) or (lang trong)) da nang huong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - ((cang thang) OR (lang trong)) da nang huong dan toan cao*.