Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh va » thanh van, hanh va, thanh ha
va thanh » gia thanh, ban thanh, va tinh
cua tre » cua te, cuu tre, dua tren
truc va » thuc va, thuc vat, trung va
vu sach » vu bach, vu khach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
su sach » so sach
hieu ve » hieu va, hieu van
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) OR (su sach)) ky lang xa hoi. hieu ve cau truc va thanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (su sach)) ky lang xa hoi. hieu ve cau truc va thanh va ((cua tre) OR (cua triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) OR (su sach)) ky lang xa hoi. hieu ve cau truc va thanh va ((cua tre) or (cua triet))".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) OR (su sach)) ky lang xa hoi. hieu ve cau truc va thanh va ((cua tre) or (cua triet))*.