Perhaps you should try some spelling variations:
cach cua » mach cua, cach dua, canh cua
tu sach » thu sach, su sach, te sach
cam luc » cam xuc, cau luc
cac cua » cac qua, ca cua, tac cua
va dinh » van dinh, va kinh, va tinh
sach ky » sac ky, sach y, sach ty
hieu va » hieu qua
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
luc va » duc va, tuc va, loc va

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 ky tang xa hoi. ((hieu va) or (lieu va)) cam luc va dinh ((cac cua) OR (cach cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang xa hoi. ((hieu va) OR (lieu va)) cam luc va dinh ((cac cua) OR (cach cua)) tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky tang xa hoi. ((hieu va) or (lieu va)) cam luc va dinh ((cac cua) OR (cach cua)) tre*".