Perhaps you should try some spelling variations:
nhung dung » phuong dung, ung dung, thong dung
hanh trinh » canh tranh, hanh chinh
nhu phuong » thu phuong, nhung phuong, thi phuong
hieu xanh » chieu xanh, hieu manh, hieu nganh
trinh cua » tinh cua, trinh luat, trinh quan
doc hieu » toc thieu, hoc thieu, hoc hien
van tan » van tuan, van tai, van thanh

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 - hanh trinh cua ((nhung dung) or (nhu phuong)) ((van tan) OR (van ban)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh trinh cua ((nhung dung) OR (nhu phuong)) ((van tan) OR (van ban)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh trinh cua ((nhung dung) or (nhu phuong)) ((van tan) OR (van ban)) tap".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh cua ((nhung dung) or (nhu phuong)) ((van tan) OR (van ban)) tap*.