Perhaps you should try some spelling variations:
sang trong » lang trong, mang trong, nang trong
chieu sang » chieu sach, chieu xanh, hieu lang
hieu manh » chieu xanh, hieu nganh, dieu hanh
quang lua » quang cua, quang tuan, quang xuan
trong van » trong cac
lua sang » luc sang, bua sang, cua sang
van van » tan van, san van, van vat

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sang) or (hieu manh)) - tinh quang lua sang trong van van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((chieu sang) OR (hieu manh)) - tinh quang lua sang trong van van ban.
• Adding a wildcard symbol may retrieve word variants: doc ((chieu sang) or (hieu manh)) - tinh quang lua sang trong van van ban*.