Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thiet tach » chiet tach, thien hach, thuat tach
thanh tung » thanh cong
nhung cong » dung cong, thong cong, nhung don
hoc thiet » hoc thieu, hoc thuyet, hoc hien
hang cong » dang cong, hang nong, bang cong
nang quan » ban quan, nang suat
quan cau » quang cao, toan cau, quan ha

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 tach - ((thanh thuong) or (thanh tung)) cam ((nhung cong) or (hang cong)) nang quan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - ((thanh thuong) OR (thanh tung)) cam ((nhung cong) OR (hang cong)) nang quan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - ((thanh thuong) or (thanh tung)) cam ((nhung cong) or (hang cong)) nang quan cau*.