Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, nhieu tang
trinh quan » tinh quang, trinh han
hieu lang » hieu quang, nhieu tang, hieu van
tac trien » tac tren, tac truyen, tac tuyen
trien cay » tren cay, trien cac, trien cam
ban cong » bang cong, van cong, phan cong
cong tac » cong ty

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((hieu lang) or (chieu sang)) - hanh ((trinh quan) OR (trinh luat)) ban cong tac trien cay~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu lang) OR (chieu sang)) - hanh ((trinh quan) OR (trinh luat)) ban cong tac trien cay.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu lang) or (chieu sang)) - hanh ((trinh quan) OR (trinh luat)) ban cong tac trien cay".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu lang) or (chieu sang)) - hanh ((trinh quan) OR (trinh luat)) ban cong tac trien cay*.