Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
lieu van » hieu van, sieu van, lieu nano
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
than cua » nhan cua, thai cua, gian cua
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va dang » van dang, va nang, va lang
ban cua » ban quan

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ky nang xa hoi. ((lieu van) or (lieu va)) cac nuoc va dang ((than cua) OR (ban cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang xa hoi. ((lieu van) OR (lieu va)) cac nuoc va dang ((than cua) OR (ban cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang xa hoi. ((lieu van) or (lieu va)) cac nuoc va dang ((than cua) OR (ban cua)) te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ky nang xa hoi. ((lieu van) or (lieu va)) cac nuoc va dang ((than cua) OR (ban cua)) te*.