Perhaps you should try some spelling variations:
khong cong » thong cong, khong cang, chong cong
theo phap » thi phap
hanh tang » hanh trang, anh tang, hanh tung
hanh mang » nhanh mang, hanh trang, nhanh lang
he khong » he thong
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan cau » toan cao, toan ban, toan tap
theo ha » theo chu, thep nha, theo cap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo ha) or (theo phap)) tinh - ((hanh tang) or (hanh mang)) he khong cong tac toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo ha) OR (theo phap)) tinh - ((hanh tang) OR (hanh mang)) he khong cong tac toan cau.
• Adding a wildcard symbol may retrieve word variants: ((theo ha) or (theo phap)) tinh - ((hanh tang) or (hanh mang)) he khong cong tac toan cau*.