Perhaps you should try some spelling variations:
nhung vung » nhung dung, nhung huong, nhung tuong
cong thanh » dong thanh, cong trinh, cong tan
hieu xanh » chieu xanh, hieu nganh, dieu hanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
vung manh » hung manh, tung manh, vung lanh
thanh va » thanh van, hanh va, thanh ha
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (hieu manh)) - cong thanh va nhung vung manh ((van ban) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu manh)) - cong thanh va nhung vung manh ((van ban) OR (toan tap)).
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu manh)) - cong thanh va nhung vung manh ((van ban) or (toan tap))*.