Perhaps you should try some spelling variations:
thanh tung » thanh cong
nhung cong » dung cong, thong cong, nhung don
hien hanh » dieu hanh
hang cong » dang cong, hang nong, bang cong
toc hien » hoc hien, toc mien, toc thieu
tung cap » trung cap, cung cap, thong cap
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hien hanh - thanh tung cap ((nhung cong) or (hang cong)) dan ((phan cau) OR (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hien hanh - thanh tung cap ((nhung cong) OR (hang cong)) dan ((phan cau) OR (phan dau))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc hien hanh - thanh tung cap ((nhung cong) or (hang cong)) dan ((phan cau) OR (phan dau))*".