Perhaps you should try some spelling variations:
dieu tinh » diep tinh, lieu tinh, dien tinh
tranh cua » doanh cua, manh cua
hoc dieu » hoc thieu, hoc hien
mang cua » manh cua, dung cua, ban cua
cong san » cong tac
san toan » van toan, dan toan, manh 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 dieu tinh - hanh ((tranh cua) or (mang cua)) trong cong san toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc dieu tinh - hanh ((tranh cua) OR (mang cua)) trong cong san toan ban*.