Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thu sach » tu sach, thuat sach, thu hoach
van hanh » van thanh, ban hanh, van anh
va trien » va truyen, va thiet, va tuyen
te sach » toc sach
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
hieu va » lieu va, hieu qua
xuc van » duc van, luc van, xuc ban
va cam » va cham, va cac, va cao
vi va » vi van, vai va, vu va

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