Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
pham cuc » pham chuc, pham duc, pham cua
ban hanh » ban hang
thai cua » than cua, tai cuc, dai cua
hieu ve » hieu va, hieu van
cuc ban » cua ban, cac ban, cuu ban
y nang » ky nang, ly nang, v nang
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 y nang x hoi. ((hieu ve) or (lieu va)) pham cuc ban hanh ((thai cua) OR (tri cua)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y nang x hoi. ((hieu ve) OR (lieu va)) pham cuc ban hanh ((thai cua) OR (tri cua)) tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang x hoi. ((hieu ve) or (lieu va)) pham cuc ban hanh ((thai cua) OR (tri cua)) tre".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang x hoi. ((hieu ve) or (lieu va)) pham cuc ban hanh ((thai cua) OR (tri cua)) tre*.