Perhaps you should try some spelling variations:
trinh chat » tinh chat, trinh han, trinh phan
nhung cong » dung cong, thong cong, hang cong
hoc thien » hoc hien, hoc thieu, hoc thiet
thien anh » thien danh, tien anh, thien thanh
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cao » toan ban, toan tap

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 anh - hanh ((trinh chat) OR (trinh luat)) nhung cong tac toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien anh - hanh ((trinh chat) OR (trinh luat)) nhung cong tac toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc thien anh - hanh ((trinh chat) OR (trinh luat)) nhung cong tac toan cao*.