Perhaps you should try some spelling variations:
nang phuong » bang phuong, nang thuong, nano phuong
phuong dan » phuong danh, phuong doan, huong dan
hanh dung » thanh dung, anh dung, hanh dong
luan nang » luan van, van nang, luan san
toan tap » toan ban
ha tinh » va tinh, may tinh
tai cao » thai cao, tao cao, tai sao
o ha » y ha, _ ha

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

• Performing a fuzzy search may retrieve terms with similar spellings: o ha tinh - hanh dung luan nang phuong dan ((toan tap) or (tai cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: o ha tinh - hanh dung luan nang phuong dan ((toan tap) OR (tai cao))*.