Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ky trang » ke trang, ky trong, ky tang
trang xa » trang va, trang ha, trong xa
tu cach » tu cac
dinh vi » dinh ve, dinh viet, dinh tri
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ky trang xa hoi. lieu va cam ((xuc va) OR (luc va)) dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ky trang xa hoi. lieu va cam ((xuc va) OR (luc va)) dinh vi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu cach) or (thu sach)) ky trang xa hoi. lieu va cam ((xuc va) OR (luc va)) dinh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ky trang xa hoi. lieu va cam ((xuc va) OR (luc va)) dinh vi cua tre*.