Perhaps you should try some spelling variations:
manh hanh » xanh hanh, danh thanh, minh thanh
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
sach tu » sach thu, cach tu, sach ty
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam suc » cam xuc, cao suc, cham soc
cua tre » cua te, cuu tre, dua tren

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

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