Perhaps you should try some spelling variations:
tham thuc » nham thuc, pham thuc, tam thuc
cham tuc » nham thuc, pham thuc, cham soc
thanh do » thanh de, thanh pho, thanh hoa
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
hieu van » hieu va, thien van, lieu va
te sach » toc sach
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
do cua » doi cua, co cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (thu sach)) y nang xa hoi. hieu van ((cham tuc) OR (tham thuc)) va thanh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (thu sach)) y nang xa hoi. hieu van ((cham tuc) OR (tham thuc)) va thanh do cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (thu sach)) y nang xa hoi. hieu van ((cham tuc) OR (tham thuc)) va thanh do cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (thu sach)) y nang xa hoi. hieu van ((cham tuc) OR (tham thuc)) va thanh do cua tre*.