Perhaps you should try some spelling variations:
tham soc » cham soc, tham nuoc, thai son
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
va tham » van tham, va cham, va thanh
soc van » hoc van, oc van, sac van
cuu tre » cau tren, cau treo
cua tre » cua te, cua triet, dua tren
y nang » ky nang, ly nang, v nang
ma hoi » mai hoi, xa hoi, ma hoa
anh vi » hanh vi, anh ve, anh vu
anh va » hanh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ma hoi. lieu va tham soc van ((anh vi) OR (anh va)) ((cuu tre) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ma hoi. lieu va tham soc van ((anh vi) OR (anh va)) ((cuu tre) OR (cua tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang ma hoi. lieu va tham soc van ((anh vi) OR (anh va)) ((cuu tre) or (cua tre))".
• Adding a wildcard symbol may retrieve word variants: su sach y nang ma hoi. lieu va tham soc van ((anh vi) OR (anh va)) ((cuu tre) or (cua tre))*.