Perhaps you should try some spelling variations:
truong trung » tieng trung
hieu quang » thieu quang, hieu quan, hieu qua
chieu sang » chieu sach, chieu xanh, nhieu tang
nhanh lang » nhanh quang, nhanh thang, nhan dang
hieu lang » nhieu tang, hieu van, biet lang
xa truong » cac truong
trung va » truong va, trang va, trung ha
than cau » toan cau, phan cau, than cap
lang xa » lang ha, dang xay, lang van
va than » va thanh, van than, va phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (((hieu lang) OR (hieu quang)))) - nhanh lang xa truong trung va than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (((hieu lang) OR (hieu quang)))) - nhanh lang xa truong trung va than cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (((hieu lang) OR (hieu quang)))) - nhanh lang xa truong trung va than cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((hieu lang) OR (hieu quang)))) - nhanh lang xa truong trung va than cau*.