Perhaps you should try some spelling variations:
tiong chang » thon chang, trong chan, trong chong
thieu sang » chieu sang, thieu khang, thieu quang
trung tuan » trung thanh, trung tam, tran tuan
hoc thieu » toc thieu, hoc hien
trung cua » truong cua, trung cap, dung cua
chang va » hang va, chong va, thang va
tuan cau » toan cau, quan cau, tuan cu
va tuan » van tuan, va quan, va toan

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 - thanh ((trung cua) or (trung tuan)) tiong chang va tuan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh ((trung cua) OR (trung tuan)) tiong chang va tuan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh ((trung cua) or (trung tuan)) tiong chang va tuan cau*.