Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
dong cua » dung cua, cong cua, huong cua
van hanh » van thanh, ban hanh, van anh
cham xuc » cam xuc, chat xuc, cham soc
va cham » va chat, va tham
doi cua » dai cua, hoi cua
xuc van » duc van, luc van, xuc ban
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach ty ((nang xa) OR (nang ma)) hoi. hieu va cham xuc van hanh ((doi cua) or (dong cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ty ((nang xa) OR (nang ma)) hoi. hieu va cham xuc van hanh ((doi cua) OR (dong cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty ((nang xa) OR (nang ma)) hoi. hieu va cham xuc van hanh ((doi cua) or (dong cua)) te".
• Adding a wildcard symbol may retrieve word variants: toc sach ty ((nang xa) OR (nang ma)) hoi. hieu va cham xuc van hanh ((doi cua) or (dong cua)) te*.