Perhaps you should try some spelling variations:
nhanh thai » nhanh thi, nhanh thanh, nhanh thang
cau nuoc » cap nuoc, cac nuoc, dau nuoc
cau treo » cau theo, cau triet, cau trieu
hang hai » hoang hai, hang tai, thanh hai
cau tren » cu tren, dau tren, ca tren
hieu van » hieu va, thien van, lieu va
van cau » van dau, van hau, van chat
sach ky » sac ky, sach y, sach ty
su sach » so sach, vu sach
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: su sach ky nang x hoi. hieu van cau nuoc va ((nhanh thai) or (hang hai)) ((cau treo) OR (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. hieu van cau nuoc va ((nhanh thai) OR (hang hai)) ((cau treo) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. hieu van cau nuoc va ((nhanh thai) or (hang hai)) ((cau treo) OR (cau tren))".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang x hoi. hieu van cau nuoc va ((nhanh thai) or (hang hai)) ((cau treo) OR (cau tren))*.