Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tien kinh » trien kinh, dien kinh, tien minh
hoc tien » hoc tieng, hoc hien, hoc vien
mang cua » manh cua, ban cua, cong cua
dung cua » dung luan, dung cho
cong san » cong tac
toan cao » toan ban
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 tien kinh - hanh ((mang cua) OR (dung cua)) nhung cong san ((toan cao) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tien kinh - hanh ((mang cua) OR (dung cua)) nhung cong san ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tien kinh - hanh ((mang cua) OR (dung cua)) nhung cong san ((toan cao) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc tien kinh - hanh ((mang cua) OR (dung cua)) nhung cong san ((toan cao) or (toan tap))*.