Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, va tinh
te sach » toc sach
va hanh » van hanh, va danh, ban hanh
van cam » van nam, van lam, van dam
van cau » van dau, van hau, van chat
nang xa » nang x, lang xa, nang ma
cu tren » tu tren, dua tren
y nang » ky nang, ly nang, v nang
vi cu » vi su, vi xu, vi du

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 xa hoi. hieu ((van cam) OR (van cau)) xuc ((va hanh) or (va thanh)) vi cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang xa hoi. hieu ((van cam) OR (van cau)) xuc ((va hanh) OR (va thanh)) vi cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang xa hoi. hieu ((van cam) OR (van cau)) xuc ((va hanh) or (va thanh)) vi cu tren".
• Adding a wildcard symbol may retrieve word variants: te sach y nang xa hoi. hieu ((van cam) OR (van cau)) xuc ((va hanh) or (va thanh)) vi cu tren*.