Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
quan thong » quang thong, quan trong, quang thang
xuan thong » xuat thong, xuan thang, xuan truong
hieu lang » hieu quang, nhieu tang, hieu van
thong dan » thong van, tuong dan, thong den
gian cac » gian dan, gian cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) OR (hieu lang)) - hanh chinh ((quan thong) or (xuan thong)) thong dan gian cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu lang)) - hanh chinh ((quan thong) OR (xuan thong)) thong dan gian cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (hieu lang)) - hanh chinh ((quan thong) or (xuan thong)) thong dan gian cac".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (hieu lang)) - hanh chinh ((quan thong) or (xuan thong)) thong dan gian cac*.