Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh hai » thanh hai, nhanh hai, hang hai
tu sach » thu sach, su sach, te sach
van cam » van nam, van lam, van cau
truc va » thuc va, thuc vat, trung va
cua cu » cua chu, cua cau, cua co
cua su » qua su
luc va » duc va, tuc va, loc va
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: tu sach y nang x hoi. hieu van cam ((truc va) OR (luc va)) hanh hai ((cua cu) OR (cua su))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y nang x hoi. hieu van cam ((truc va) OR (luc va)) hanh hai ((cua cu) OR (cua su))".
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu van cam ((truc va) OR (luc va)) hanh hai ((cua cu) OR (cua su))*.