Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
tang lai » trang lai, tang tai, tang loi
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, kho tang
lai hoi » dai hoi, lai hoa, lai roi
hieu vu » hieu va, hieu su, dieu vu
vai cua » dai cua, hai cua, lai cua
cham xu » chao xu, cham cuu, chat xuc
di cua » dai cua, doi cua, de cua
tu sac » tu sach, tu cac, tu san
xu van » tu van, vu van, su van
sac ky » cac ky, sai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sac ky tang lai hoi. ((hieu vu) or (hieu ve)) cham xu van hanh ((vai cua) or (di cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang lai hoi. ((hieu vu) OR (hieu ve)) cham xu van hanh ((vai cua) OR (di cua)) te.
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang lai hoi. ((hieu vu) or (hieu ve)) cham xu van hanh ((vai cua) or (di cua)) te*.