Perhaps you should try some spelling variations:
nhung xuong » nhung huong, nhung tuong, nhung phuong
thieu sang » chieu sang, thieu khang, thieu quang
nhanh lang » nhanh quang, nhanh thang, nhan dang
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
cua nhung » va nhung
xuong dan » huong dan, xuong san, tuong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap

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 - ((nhanh lang) or (hanh trinh)) cua nhung xuong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - ((nhanh lang) OR (hanh trinh)) cua nhung xuong dan than tap*.