Perhaps you should try some spelling variations:
dau tien » van tien
dau tren » dat tren, dau tieng, dau trong
lang van » dang van, tang van, hoang van
hieu van » hieu va, thien van, lieu va
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
nam luc » nang luc, nhan luc, nam thuc
van hoe » van hoa, van hoc, van hieu
ky lang » ky nang, ky dang, ky tang
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky lang van hoe. hieu van nam luc ((va danh) or (va hanh)) va ((dau tren) OR (dau tien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky lang van hoe. hieu van nam luc ((va danh) OR (va hanh)) va ((dau tren) OR (dau tien)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky lang van hoe. hieu van nam luc ((va danh) or (va hanh)) va ((dau tren) OR (dau tien))".
• Adding a wildcard symbol may retrieve word variants: te sac ky lang van hoe. hieu van nam luc ((va danh) or (va hanh)) va ((dau tren) OR (dau tien))*.