Perhaps you should try some spelling variations:
su sach » vu sach
hanh va » hang va, hanh vi
thuc va » thuc dan, thuc day
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
ty nang » ky nang, ty xang, ty hang
so sach » so sanh, bo sach, co sach
va cua » va chua, via cua, ca cua
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)) ty nang xa hoi. hieu ve cam ((thuc va) or (thuc vat)) hanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ty nang xa hoi. hieu ve cam ((thuc va) OR (thuc vat)) hanh va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ty nang xa hoi. hieu ve cam ((thuc va) or (thuc vat)) hanh va cua tre*".