Perhaps you should try some spelling variations:
va trien » va truyen, va tuyen, va tieng
te sach » toc sach
hanh de » hanh ve, hanh kem
va hanh » van hanh, va thanh, va danh
qua cac » cua cac
sach ky » sac ky, sach y, sach ty
qua cam » qua cham, qua ca, qua cai
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
xuc va » duc va, tuc va, luc va
thiet » thieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky lang xa hoi. hieu ((qua cam) or (qua cac)) xuc va hanh de ((va trien) OR (va thiet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky lang xa hoi. hieu ((qua cam) OR (qua cac)) xuc va hanh de ((va trien) OR (va thiet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky lang xa hoi. hieu ((qua cam) or (qua cac)) xuc va hanh de ((va trien) OR (va thiet))".
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu ((qua cam) or (qua cac)) xuc va hanh de ((va trien) OR (va thiet))*.