Perhaps you should try some spelling variations:
hien nhanh » hien hanh, thien thanh, tien thanh
chieu sach » chinh sach, chiet tach, chieu sang
thanh dung » thanh duong, thanh tung, thanh hung
hien xanh » hien hanh, chieu xanh, hien khanh
cua tuong » cua truong, cua thuong, cua huong
dung cua » dung luan, dung cho
qua doan » quan doan, qua dan, quang doan
doan tap » toan tap, doan cap, doanh tai
duong » huong, dong

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 (hien nhanh))) or (chieu sach)) - thanh dung cua tuong duong qua doan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((hien xanh) OR (hien nhanh))) OR (chieu sach)) - thanh dung cua tuong duong qua doan tap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((hien xanh) OR (hien nhanh))) or (chieu sach)) - thanh dung cua tuong duong qua doan tap*".