Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
thiet hach » thien hach, thuyet hach, thiet hai
hoc thiet » hoc thieu, hoc thuyet, hoc hien
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
huong van » huong dan, duong van, hong van
manh cua » doanh cua, ban cua
toan tai » toan tap, doanh tai, toan cao
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: hoc thiet hach - canh manh cua nhung huong van ((toan tai) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet hach - canh manh cua nhung huong van ((toan tai) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thiet hach - canh manh cua nhung huong van ((toan tai) or (toan ban))*.