Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
va thanh » gia thanh, ban thanh, le thanh
cach tu » cach thuc
va tinh » may tinh
cac xuc » cam xuc, cac nuoc, chat xuc
vu cach » va cach, ve cach, vu bach
nang xa » lang xa, nang ma, mang xa
hieu ve » hieu va, hieu van
vi cau » va cau, ve cau, di cau
ve cac » va cac, vien cac

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

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