Perhaps you should try some spelling variations:
trung thanh » truong thanh
khong tuong » khong xuong, khong trong, phong tuong
hieu lang » chieu sang, hieu quang, nhieu tang
trung cua » truong cua, trung tuan, trung cap
tuong dan » huong dan, tung dan, xuong dan
doi hieu » doi chieu, doc hieu, doi hien
phan cac » nhan cach, phan lap, phan van
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi hieu lang - thanh ((trung cua) or (trung thanh)) khong tuong dan ((phan cac) or (phan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi hieu lang - thanh ((trung cua) OR (trung thanh)) khong tuong dan ((phan cac) OR (phan dau)).
• Adding a wildcard symbol may retrieve word variants: doi hieu lang - thanh ((trung cua) or (trung thanh)) khong tuong dan ((phan cac) or (phan dau))*.