Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thong cong » trong cong, tong cong, thong thong
tranh cua » doanh cua
manh cua » doanh cua, ban cua
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan tu » phan tu, han tu, chon tu

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)) - canh ((tranh cua) OR (manh cua)) thong cong dan chan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - canh ((tranh cua) OR (manh cua)) thong cong dan chan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) or (chieu sang)) - canh ((tranh cua) OR (manh cua)) thong cong dan chan tu".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - canh ((tranh cua) OR (manh cua)) thong cong dan chan tu*.