Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, le thanh
sach tu » sach thu, cach tu, sach ty
va tinh » may tinh
vu sach » vu bach, su sach, vu khach
tu nang » tru nang, tu nong, tu nano
ve cham » va cham, ve chat, vu cham
ve cac » va cac, vien cac
vi cau » va cau, ve cau, di cau
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ((ve cac) or (ve cham)) xuc ((va thanh) or (va tinh)) vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sach tu nang x hoi. hieu ((ve cac) OR (ve cham)) xuc ((va thanh) OR (va tinh)) vi cau tren.
• Adding a wildcard symbol may retrieve word variants: vu sach tu nang x hoi. hieu ((ve cac) or (ve cham)) xuc ((va thanh) or (va tinh)) vi cau tren*.