Perhaps you should try some spelling variations:
thanh trung » thanh tung
tuong thong » thong thong, tong thong, tuong tuong
chieu sang » chieu sach, chieu xanh, nhieu tang
hieu lang » hieu quang, nhieu tang, biet lang
trung doi » trung dai, trong doi, trung do
doi tuong » moi truong, doi song
thong dan » thong van, tuong dan, thong den
hieu van » hieu va, thien van, lieu va
dan phan » doan phan, dan chan, van 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: ho ((chieu sang) or (((hieu lang) OR (hieu van)))) - thanh trung doi tuong thong dan phan cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (((hieu lang) OR (hieu van)))) - thanh trung doi tuong thong dan phan cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (((hieu lang) OR (hieu van)))) - thanh trung doi tuong thong dan phan cac".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (((hieu lang) OR (hieu van)))) - thanh trung doi tuong thong dan phan cac*.