Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
va hanh » va thanh, va danh, ban hanh
du tren » dua tren, dau tren, duc tren
sach v » sach va, sach y, sach vay
sach 2 » sach y
vi du » vi dum, va du, ve du

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach v) or (sach 2)) nang xa hoi. hieu van cam xuc ((va hanh) OR (van hanh)) vi du tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach v) OR (sach 2)) nang xa hoi. hieu van cam xuc ((va hanh) OR (van hanh)) vi du tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach v) or (sach 2)) nang xa hoi. hieu van cam xuc ((va hanh) OR (van hanh)) vi du tren".
• Adding a wildcard symbol may retrieve word variants: tu ((sach v) or (sach 2)) nang xa hoi. hieu van cam xuc ((va hanh) OR (van hanh)) vi du tren*.