Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
manh hai » lanh hai, minh hai, thanh hai
hieu van » hieu va, thien van, lieu va
hai cua » thai cua, dai cua, hoi cua
va manh » van manh, va danh, va hanh
tu sach » thu sach, su sach, tu cach
hieu ve » hieu va
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
te sach » toc sach
xuc va » duc va, tuc va, luc 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) or (te sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cam xuc va manh hai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cam xuc va manh hai cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cam xuc va manh hai cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ky lang xa hoi. ((hieu ve) OR (hieu van)) cam xuc va manh hai cua viet*.