Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc lieu » hoc sieu, hoc tieu, ho lieu
hoc dieu » hoc thieu, hoc hien
tang cua » mang cua, tang luan, thong cua
hang cua » mang cua, hang ca, huong cua
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan ban » van 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 lieu) OR (hoc dieu)) tinh - hanh ((tang cua) or (hang cua)) nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc lieu) OR (hoc dieu)) tinh - hanh ((tang cua) OR (hang cua)) nhung cong tac toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc lieu) OR (hoc dieu)) tinh - hanh ((tang cua) or (hang cua)) nhung cong tac toan ban*".