Perhaps you should try some spelling variations:
su sach » so sach, vu sach
ky tang » ky dang, kho tang, ky trong
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu va, hieu van
truc va » thuc va, trung va
danh vi » hanh vi, dinh vi, danh di
vi cua » vai cua, di cua
ve cam » ve cham, ve cac, va cam
cua te » cua tu

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 ((ky nang) or (ky tang)) lap hai. hieu ve cam ((truc va) OR (thuc vat)) danh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky nang) OR (ky tang)) lap hai. hieu ve cam ((truc va) OR (thuc vat)) danh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ky nang) or (ky tang)) lap hai. hieu ve cam ((truc va) OR (thuc vat)) danh vi cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((ky nang) or (ky tang)) lap hai. hieu ve cam ((truc va) OR (thuc vat)) danh vi cua te*.