Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
te sach » toc sach
xuc van » duc van, luc van, vuc van
nang ma » tang ma, sang ma, nang cao
doi cua » dai cua, hoi cua
di cua » dai cua, de cua, do cua
y nang » ky nang, ly nang, v nang
ve cac » vien cac
ma hoi » mai hoi, xa hoi, ma hoa

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