Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
dung trung » dung trong, quang trung, dung ung
manh hung » anh huong
hung tuan » hung tran, quang tuan, trung tuan
tuan dung » tuan duong, tran dung, tan dung
trung tap » trung tam, trung cap, rung tap
tap toan » tap doan, tap quan, bai toan
toan tap » toan 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) or (chieu xanh)) - manh hung tuan dung trung tap toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - manh hung tuan dung trung tap toan tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - manh hung tuan dung trung tap toan tap*.