Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tinh cua » trinh cua, tinh chat, tranh cua
sinh cua » manh cua, dinh cuu, sinh va
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 thieu xanh - hanh ((((tinh cua) OR (sinh cua))) or (trinh luat)) nhung cong tac toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh ((((tinh cua) OR (sinh cua))) OR (trinh luat)) nhung cong tac toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh ((((tinh cua) OR (sinh cua))) or (trinh luat)) nhung cong tac toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh ((((tinh cua) OR (sinh cua))) or (trinh luat)) nhung cong tac toan ban*.