Perhaps you should try some spelling variations:
thanh trung » thanh tung
trong nhung » thong nhung, trong hung, trong phung
chieu sang » chieu sach, chieu xanh, hieu lang
thien quan » trien quang, lien quan, thien van
trung tuan » trung thanh, trung tam, tran tuan
tuan trong » thuan trong, quan trong, tran trong
hanh tuan » thanh tuan, manh tuan, khanh thuan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (thien quan)) - thanh trung tuan trong nhung ((hanh tuan) OR (anh tuan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (thien quan)) - thanh trung tuan trong nhung ((hanh tuan) OR (anh tuan)) cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (thien quan)) - thanh trung tuan trong nhung ((hanh tuan) OR (anh tuan)) cau*".