Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
ban thanh » ban hanh, ban hang
thanh ve » hanh ve, thanh va, thanh vien
cao suc » cao su, cao duc
cao luc » bao luc, cao duc, cau luc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
v nang » va nang, vu nang, van nang
ve cua » le cua, de cua, te cua

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) or (v nang)) xa hoi. hieu va ((cao luc) OR (cao suc)) ban thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((ky nang) OR (v nang)) xa hoi. hieu va ((cao luc) OR (cao suc)) ban thanh ve cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((ky nang) or (v nang)) xa hoi. hieu va ((cao luc) OR (cao suc)) ban thanh ve cua tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((ky nang) or (v nang)) xa hoi. hieu va ((cao luc) OR (cao suc)) ban thanh ve cua tre*.