Perhaps you should try some spelling variations:
dung tren » dung trong, dung trung
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
va tinh » may tinh
va danh » va dinh, va dan, va hanh
cau luc » cau truc, cau phuc
hieu ke » hieu kem, chieu ke, hieu ky
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
ke cau » ket cau
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: tu sach ky lang xa hoi. hieu ke cau luc ((va danh) or (va tinh)) vi ((dung tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky lang xa hoi. hieu ke cau luc ((va danh) OR (va tinh)) vi ((dung tren) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: tu sach ky lang xa hoi. hieu ke cau luc ((va danh) or (va tinh)) vi ((dung tren) or (cua te))*.