Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
hoc thiet » hoc thieu, hoc thuyet, hoc hien
thiet anh » thien anh, thuyet anh, thien danh
tranh cua » doanh cua, manh cua
san phan » san pham, van phan, sat phan
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thiet anh - canh tranh cua ((nhung cong) or (thong cong)) san phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet anh - canh tranh cua ((nhung cong) OR (thong cong)) san phan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thiet anh - canh tranh cua ((nhung cong) or (thong cong)) san phan cau*.