Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
cao xuc » cam xuc, cao duc, chat xuc
mang xa » lang xa, mang may, dang xay
nang ma » tang ma, sang ma, nang cao
cao suc » cao su, cao duc
vi cua » vai cua, di cua
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 y ((mang xa) or (nang ma)) hoi. lieu va ((cao xuc) OR (cao suc)) van hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach y ((mang xa) OR (nang ma)) hoi. lieu va ((cao xuc) OR (cao suc)) van hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach y ((mang xa) or (nang ma)) hoi. lieu va ((cao xuc) OR (cao suc)) van hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach y ((mang xa) or (nang ma)) hoi. lieu va ((cao xuc) OR (cao suc)) van hanh vi cua te*.