Perhaps you should try some spelling variations:
khuong tinh » chuong trinh, phuong trinh, phuong binh
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh trinh » canh tranh, hanh chinh
doc nhieu » doc hieu, toc thieu, hoc thieu
cua dung » cua dang, qua dung, cua rung
cua dong » chua dong, cua cong, cua dang
toan ban » van 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 nhieu tang - hanh trinh ((((cua dung) OR (cua dong))) or (su dung)) khuong tinh toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc nhieu tang - hanh trinh ((((cua dung) OR (cua dong))) OR (su dung)) khuong tinh toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc nhieu tang - hanh trinh ((((cua dung) OR (cua dong))) or (su dung)) khuong tinh toan ban*".