Perhaps you should try some spelling variations:
cham loc » cham soc, chon loc, cham o
cay phoi » cap phoi, tay hoi, cay cho
tu sach » thu sach, su sach, te sach
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cua tre » cua te, cuu tre, cua triet
hieu ve » hieu van
ky dang » ky nang, ky danh
y dang » 2 dang, _ dang, b dang
loc va » hoc va, luc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((y dang) or (ky dang)) cay phoi. ((hieu ve) OR (hieu va)) cham loc va hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y dang) OR (ky dang)) cay phoi. ((hieu ve) OR (hieu va)) cham loc va hanh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y dang) or (ky dang)) cay phoi. ((hieu ve) OR (hieu va)) cham loc va hanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y dang) or (ky dang)) cay phoi. ((hieu ve) OR (hieu va)) cham loc va hanh vi cua tre*.