Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
suat nhung » thuat nhung, suat thong, cua nhung
hieu lang » chieu sang, hieu quang, nhieu tang
hanh nang » anh nang, ganh nang, hanh mang
tuong bai » tuong lai, cuong bai, thong bai
hieu van » hieu va, thien van, lieu va
bai toan » bai tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu lang) or (hieu van)) - hanh nang suat nhung tuong bai toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (hieu van)) - hanh nang suat nhung tuong bai toan ban*.