Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
canh manh » canh tranh, cach mang, van manh
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
cong san » cong tac
san phan » san pham, van phan, sat phan
phan cac » nhan cach, phan dau, phan lap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu quang - ((canh manh) or (lanh manh)) cua nhung cong san phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu quang - ((canh manh) OR (lanh manh)) cua nhung cong san phan cac.
• Adding a wildcard symbol may retrieve word variants: hoc thieu quang - ((canh manh) or (lanh manh)) cua nhung cong san phan cac*.