Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nuoc duc » ngoc duc, nuoc cuc, duoc duoc
va trinh » van trinh, va tinh, lap trinh
trinh di » trinh do, trinh dien, trinh dinh
su sach » vu sach
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve nuoc » ve duoc
cua tre » cua te, cuu tre, dua tren

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sach)) ky nang xa hoi. hieu ve nuoc duc va trinh di ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky nang xa hoi. hieu ve nuoc duc va trinh di ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (so sach)) ky nang xa hoi. hieu ve nuoc duc va trinh di ((cua tre) or (cua triet))*.