Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
cua triet » cua viet, su triet, va triet
hoc sach » hoc sinh, hoc cac, hoc anh
va thanh » gia thanh, ban thanh, va tinh
tu lang » cu lang, xu lang, tu quang
tu lanh » tu hanh, tu lenh, tu manh
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, dua tren
va co » vo co

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

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