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, cau truc
hanh di » hanh de, hang di, danh di
y nang » ky nang, ly nang, v nang
va dau » va dao
tuc va » thuc va, truc va, tuc xa

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 va ((hanh di) OR (hanh vi)) 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 va ((hanh di) OR (hanh vi)) cau tren".
• Adding a wildcard symbol may retrieve word variants: vu sach y nang xa hoi. lieu va dau tuc va ((hanh di) OR (hanh vi)) cau tren*.