Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
nhung huong » nhung phuong, nhung tuong, nhung cong
thieu sang » chieu sang, thieu quang, hieu lang
thanh tung » thanh cong
huong doan » phuong doan, huong dan, huong loan
dan nhung » ban nhung, dap nhung, san nhung
doan phan » doanh phan, toan phan, dan phan
tung dan » dung dan, huong dan, trung dai
phan cau » phan dau, phan cac, phan tu

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 (thieu khang)) - thanh tung dan nhung huong doan phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) OR (thieu khang)) - thanh tung dan nhung huong doan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) OR (thieu khang)) - thanh tung dan nhung huong doan phan cau*.