Perhaps you should try some spelling variations:
thien tinh » khien tinh, thien minh, tien tinh
trang luan » tang luan, tranh luan, trang tuan
hoc thien » hoc hien, hoc thieu, hoc thiet
cong hach » cong sach, cong thanh, cong khanh
hach toan » thanh toan, manh toan
van cong » van dong, van phong, phan cong
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 thien tinh - hanh ((trang luan) or (dung luan)) van cong hach toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thien tinh - hanh ((trang luan) OR (dung luan)) van cong hach toan tap*.