Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
hanh mang » nhanh mang, hanh trang, nhanh lang
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban
mang va » mang vua, hang va, bang va

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) or (theo tieu)) lang - hanh mang va nhung cong tac toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc thieu) OR (theo tieu)) lang - hanh mang va nhung cong tac toan tap.
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) or (theo tieu)) lang - hanh mang va nhung cong tac toan tap*.