Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
trung chan » trung phan, trung can, trung nhan
trong chan » trong chuan, trong cham, trong can
hoc thieu » toc thieu, hoc hien
trong van » trong cac
van luan » van quan, van tuan, von luan
luan ban » luan van, luan san, luan han

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 - manh ((trung chan) OR (trong chan)) dung trong van luan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - manh ((trung chan) OR (trong chan)) dung trong van luan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - manh ((trung chan) OR (trong chan)) dung trong van luan ban*.