Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
hieu cach » hieu cac, chieu sach, hieu ca
trinh cua » trinh luat, trinh quan, trinh luan
hoc hieu » hoc thieu, hoc hien, doc hieu
tinh cua » sinh cua, tinh chat, tranh cua
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan 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 hieu cach - hanh ((trinh cua) or (tinh cua)) nhung huong dan ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu cach - hanh ((trinh cua) OR (tinh cua)) nhung huong dan ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: hoc hieu cach - hanh ((trinh cua) or (tinh cua)) nhung huong dan ((toan cau) or (toan cao))*.