Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
van hanh » van thanh, ban hanh, van anh
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
xuc van » duc van, luc van, xuc ban
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac
cua tu » cua tuc, cua su, cua cu

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 ky nang ma hoa. hieu ((ve cam) OR (ve cac)) xuc van hanh vi ((cua te) or (cua tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ky nang ma hoa. hieu ((ve cam) OR (ve cac)) xuc van hanh vi ((cua te) OR (cua tu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ky nang ma hoa. hieu ((ve cam) OR (ve cac)) xuc van hanh vi ((cua te) or (cua tu))*".