Perhaps you should try some spelling variations:
nuoc san » nuoc luan, nguoi san, nuoc quan
thuc van » thuc vat, thuc dan, thuc va
hieu ve » hieu va, hieu van
phuc va » phuc vu, thuc va, chuc va
hanh le » thanh le, hanh ve, hanh de
cua tre » cua te, cuu tre, cua triet
san ky » sang ky, van ky, dan ky
ve cau » ke cau, va cau, ve cac
le cua » ly cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc san ky nang x ho. hieu ve cau ((thuc van) or (phuc va)) hanh le cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc san ky nang x ho. hieu ve cau ((thuc van) OR (phuc va)) hanh le cua tre.
• Adding a wildcard symbol may retrieve word variants: nuoc san ky nang x ho. hieu ve cau ((thuc van) or (phuc va)) hanh le cua tre*.