Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trinh cong » trinh dung
cong luong » cong thuong, nang luong, cong dong
luong dung » cuong dung, duong dung, vuong dung
hoc thieu » toc thieu, hoc hien
trong bai » trong ban, thong bai, trong hai
tap tap » tap tai, lap tap, tap lap

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 - trinh cong luong dung trong bai tap tap~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - trinh cong luong dung trong bai tap tap*.