Perhaps you should try some spelling variations:
thieu sang » thieu khang, thieu quang, hieu lang
chieu sang » chieu sach, chieu xanh, hieu lang
thanh hung » thanh huong, thanh tung, thanh trung
tran phung » tran phuong, trang phung, tran phong
tran hung » tran hong, tran quang, tran hoang
cong nang » cong ngang, cong lang, cong nong
nang hang » nang sang, hang hang, cang thang
hang dau » hang va, hang tai

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 sang) OR (chieu sang)) - thanh hung ((tran phung) or (tran hung)) cong nang hang dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sang)) - thanh hung ((tran phung) OR (tran hung)) cong nang hang dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (chieu sang)) - thanh hung ((tran phung) or (tran hung)) cong nang hang dau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (chieu sang)) - thanh hung ((tran phung) or (tran hung)) cong nang hang dau*.