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

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