Perhaps you should try some spelling variations:
thien van » thi van
cau tren » cu tren, dau tren, ca tren
thanh vi » hanh vi, thanh va, thanh ve
tru nang » tra nang, tri nang, truc nano
luc van » luoc van, luu van, duc van
xuc van » duc van, vuc van, xuc ban
vu sach » vu bach, su sach, vu khach
tu nang » tu nong, tu nano, tu lang
van cau » van dau, van hau, van chat
vi cau » va cau, ve cau, di 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 ((tu nang) or (tru nang)) xa hoi. thien van cau ((xuc van) or (luc van)) thanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach ((tu nang) OR (tru nang)) xa hoi. thien van cau ((xuc van) OR (luc van)) thanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: vu sach ((tu nang) or (tru nang)) xa hoi. thien van cau ((xuc van) or (luc van)) thanh vi cau tren*.