Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
hieu van » hieu va, thien van, lieu va
bac nuoc » bach tuoc, sach nuoc, hoc nuoc
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
va dung » van dung, va duong, vat dung
y nang » ky nang, ly nang, v nang
cuc te » cua te, cuc thue, cuc tieu
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 van ((bac nuoc) OR (cac nuoc)) va dung tai cuc te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y nang x hoi. hieu van ((bac nuoc) OR (cac nuoc)) va dung tai cuc te".
• Adding a wildcard symbol may retrieve word variants: thuat sach y nang x hoi. hieu van ((bac nuoc) OR (cac nuoc)) va dung tai cuc te*.