Perhaps you should try some spelling variations:
phuong dung » thong dung, cuong dung, phuong hoang
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
dung manh » duong manh, dung danh, hung manh
manh cuu » manh cua, mang cua, manh tu
dinh cuu » dinh chi
manh van » anh van, menh van, canh van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) or (chieu sang)) - hanh ((manh cuu) OR (dinh cuu)) phuong dung manh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - hanh ((manh cuu) OR (dinh cuu)) phuong dung manh van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu sang)) - hanh ((manh cuu) OR (dinh cuu)) phuong dung manh van ban".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - hanh ((manh cuu) OR (dinh cuu)) phuong dung manh van ban*.