Perhaps you should try some spelling variations:
luan trong » quan trong, luat trong, luan tuong
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
tang luan » dung luan
anh tang » anh bang, anh dang, anh nang
cong cac » cuong cac, cong tac, cong cau
cac nhan » ca nhan, cac nha, cam nhan
nhan cau » nhanh cau, phan cau, nhan sau

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) OR (hoc thieu)) sang - anh tang luan trong cong cac nhan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) OR (hoc thieu)) sang - anh tang luan trong cong cac nhan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) OR (hoc thieu)) sang - anh tang luan trong cong cac nhan cau*.