Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
truc va » thuc va, trung va
su sach » vu sach
hieu ve » hieu va, hieu van
dang xa » dang xay, lang xa, dang ha
so sach » so sanh, bo sach, co sach
y dang » ky dang, 2 dang, _ dang
ve cam » ve cham, ve cac, va cam

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)) y dang xa hoi. hieu ve cam ((truc va) or (thuc vat)) hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) y dang xa hoi. hieu ve cam ((truc va) OR (thuc vat)) hanh vai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) y dang xa hoi. hieu ve cam ((truc va) or (thuc vat)) hanh vai cua viet".
• Adding a wildcard symbol may retrieve word variants: ((su sach) OR (so sach)) y dang xa hoi. hieu ve cam ((truc va) or (thuc vat)) hanh vai cua viet*.