Perhaps you should try some spelling variations:
nang dai » nang dau, nang tai, lang dai
hanh hai » thanh hai, nhanh hai, hang hai
dai tai » dai hai, dai thao
hieu va » lieu va, hieu qua
cuu tre » cua tre, cau tren, cau treo
su sac » su sach, su cac, su xac
cua te » cua tu
tuc va » thuc va, truc va, tuc xa
sac ky » cac ky, sai ky
luc va » duc va, loc va
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang dai tai. hieu va cam ((luc va) or (tuc va)) hanh hai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang dai tai. hieu va cam ((luc va) OR (tuc va)) hanh hai ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: su sac ky nang dai tai. hieu va cam ((luc va) or (tuc va)) hanh hai ((cuu tre) or (cua te))*.