Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
va thanh » gia thanh, ban thanh, va tinh
thanh di » thanh doi, thanh de, thanh do
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
cao suc » cao su, cao duc
cua tu » cua tuc, cua su, cua cu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang x hoi. hieu va ((cao suc) or (giao duc)) va thanh di ((cua te) OR (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang x hoi. hieu va ((cao suc) OR (giao duc)) va thanh di ((cua te) OR (cua tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang x hoi. hieu va ((cao suc) or (giao duc)) va thanh di ((cua te) OR (cua tu))".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang x hoi. hieu va ((cao suc) or (giao duc)) va thanh di ((cua te) OR (cua tu))*.