Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
trong tran » trong trang, trong tranh, trong tan
hanh mang » nhanh mang, hanh trang, nhanh lang
quang thu » quang phu, quang thi, quang tho
quang tru » quang tri, quang trung, quang tran
mang ung » mang cung, dang ung, manh ung

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 mang ung dung trong tran ((quang thu) or (quang tru))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - hanh mang ung dung trong tran ((quang thu) OR (quang tru)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chieu sang)) - hanh mang ung dung trong tran ((quang thu) or (quang tru))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chieu sang)) - hanh mang ung dung trong tran ((quang thu) or (quang tru))*.