Perhaps you should try some spelling variations:
nuoc sac » nuoc sach, nuoc gac, nuoi sach
thang di » hang di, tang di, thang loi
nuoc san » nuoc luan, nguoi san, nuoc quan
thuc van » thuc vat, thuc dan, thuc va
chuc van » chu van, chuc va, chuc can
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
di cuu » di cau, di cua, dinh cuu
ve cau » ke cau, va cau, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((nuoc sac) OR (nuoc san)) ky nang xa hoi. hieu ve cau ((chuc van) or (thuc van)) thang di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((nuoc sac) OR (nuoc san)) ky nang xa hoi. hieu ve cau ((chuc van) OR (thuc van)) thang di cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((nuoc sac) OR (nuoc san)) ky nang xa hoi. hieu ve cau ((chuc van) or (thuc van)) thang di cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((nuoc sac) OR (nuoc san)) ky nang xa hoi. hieu ve cau ((chuc van) or (thuc van)) thang di cuu tre*.