Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
dau tuc » dau tu, dao tuc, dau nuoc
va hanh » van hanh, va thanh, va danh
hanh di » hanh vi, hanh de, hang di
y nang » ky nang, ly nang, v nang
di cau » da cau, diem cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sach y nang xa hoi. lieu va ((dau tuc) OR (cau truc)) va hanh di cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach y nang xa hoi. lieu va ((dau tuc) OR (cau truc)) va hanh di cau tren".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. lieu va ((dau tuc) OR (cau truc)) va hanh di cau tren*.