Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
kieu tinh » lieu tinh, trieu tinh, diep tinh
hoc kieu » hoc dieu, hoc sieu, hoc tieu
dung cua » dung luan
cong san » cong tac
san toan » van toan, dan toan, manh 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 kieu tinh - manh ((dung cua) OR (dung cho)) nhung cong san toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc kieu tinh - manh ((dung cua) OR (dung cho)) nhung cong san toan cao".
• Adding a wildcard symbol may retrieve word variants: hoc kieu tinh - manh ((dung cua) OR (dung cho)) nhung cong san toan cao*.