Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thien van » thi van
cap nuoc » dat nuoc
van dung » van dong, xay dung, tin dung
thai cua » than cua, tai cuc, tri cua
sach ky » sac ky, sach y, sach ty
nang xa » lang xa, nang ma, mang xa
van cap » van cau, van dap, van ca
va dang » van dang, va nang, va lang
cua te » cua tu

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) or (nang x)) hoi. thien van cap nuoc ((va dang) or (van dung)) thai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky ((nang xa) OR (nang x)) hoi. thien van cap nuoc ((va dang) OR (van dung)) thai cua te.
• Adding a wildcard symbol may retrieve word variants: thuat sach ky ((nang xa) or (nang x)) hoi. thien van cap nuoc ((va dang) or (van dung)) thai cua te*.