Perhaps you should try some spelling variations:
vu khach » vu khanh, vu khac, vay khach
lieu van » lieu va, hieu van, lieu nano
sieu van » hieu van, su van, lieu va
truc van » truc va, thuc van, truc ban
van hanh » van thanh, ban hanh, van anh
cau tren » cu tren, dau tren, ca tren
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang
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 khach ((y nang) or (ly nang)) xa hoi. ((lieu van) or (sieu van)) cau truc van hanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu khach ((y nang) OR (ly nang)) xa hoi. ((lieu van) OR (sieu van)) cau truc van hanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: vu khach ((y nang) or (ly nang)) xa hoi. ((lieu van) or (sieu van)) cau truc van hanh vi cau tren*.