Perhaps you should try some spelling variations:
nuoc sach » nguoi sach, hoc sach, cuoc cach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
sach ky » sac ky, sach y, sach ty
thuc va » thuc vat, thuc dan, thuc day
tai cau » tai cao
tai cac » tai cuc
va cam » va cham, va cac, va cao
tuc va » truc va, tuc xa, duc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: nuoc sach ky nang xa hoi. hieu va cam ((tuc va) or (thuc va)) vanh ((tai cau) OR (tai cac)) trieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: nuoc sach ky nang xa hoi. hieu va cam ((tuc va) OR (thuc va)) vanh ((tai cau) OR (tai cac)) trieu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "nuoc sach ky nang xa hoi. hieu va cam ((tuc va) or (thuc va)) vanh ((tai cau) OR (tai cac)) trieu*".