Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu cach » hieu cac, chieu sach, hieu ca
hoc hieu » hoc thieu, hoc hien, doc hieu
ca nhung » cua nhung, cam nhung, va nhung
cong san » cong tac
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 hieu cach - ((thanh tung) OR (thanh cong)) ca nhung cong san phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu cach - ((thanh tung) OR (thanh cong)) ca nhung cong san phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - ((thanh tung) OR (thanh cong)) ca nhung cong san phan cau*.