Perhaps you should try some spelling variations:
van triet » va triet, van thiet, van trieu
pham duy » pham duc
vat hinh » vat chinh, vat sinh, bat hinh
su sach » so sach, vu sach
te sach » toc sach
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
y nang » ky nang, ly nang, v nang
su van » tu van, vu van
x hoi » xa hoi, o hoi, x ho

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 (te sach)) y nang x hoi. hieu ve pham duy vat hinh su van triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (te sach)) y nang x hoi. hieu ve pham duy vat hinh su van triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (te sach)) y nang x hoi. hieu ve pham duy vat hinh su van triet*.