Perhaps you should try some spelling variations:
thien thanh » tien thanh, thi thanh, hien hanh
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
duong sat » duong mat, duong san, duong sau
dong sat » dong san, dong vat, dong dat
phan cac » nhan cach, phan dau, phan 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 ((hien xanh) or (thien thanh)) - hanh tang luan van ((dong sat) OR (duong sat)) phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien xanh) OR (thien thanh)) - hanh tang luan van ((dong sat) OR (duong sat)) phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hien xanh) or (thien thanh)) - hanh tang luan van ((dong sat) OR (duong sat)) phan cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (thien thanh)) - hanh tang luan van ((dong sat) OR (duong sat)) phan cac*.