Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh rung » thanh trung, thanh tung, thanh hung
hoc thieu » toc thieu, hoc hien
trong tac » trong cac, tuong tac, trong tan
tac khang » tan khang, tao khang, bach khang
khang cau » hang cau, khang cu, khang chan
rung hoc » trung hoc, dung hoc, vung hoc
hoc dung » hoc ung, hoc dan, tac dung

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 - thanh rung hoc dung trong tac khang cau~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh rung hoc dung trong tac khang cau*.