Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
hien cach » hien cac, hieu cach, thien hach
ca nhung » cua nhung, cam nhung, va nhung
cong san » cong tac
phan cau » phan dau, phan cac, phan lap
tung ca » trung ca, tang ca, cung ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien cach - thanh tung ca nhung cong san ((phan cau) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien cach - thanh tung ca nhung cong san ((phan cau) OR (phan tu)).
• Adding a wildcard symbol may retrieve word variants: hoc hien cach - thanh tung ca nhung cong san ((phan cau) or (phan tu))*.