Perhaps you should try some spelling variations:
thanh vien » nhan vien, thanh van
thu sang » thu hang, thu san, thu bang
vien cua » viec cua, dien cua, tien cua
kho tang » cao tang
duc van » duc va, duc tan, duc manh
luc van » luoc van, luu van, luc va
hieu tu » chieu tu, hieu tuc, hien tu
tu cham » toc cham, thi cham
ky tang » ky nang, ky dang, ky trong
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sang ((ky tang) OR (kho tang)) ha noi. hieu tu cham ((luc van) or (duc van)) thanh vien cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sang ((ky tang) OR (kho tang)) ha noi. hieu tu cham ((luc van) OR (duc van)) thanh vien cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sang ((ky tang) OR (kho tang)) ha noi. hieu tu cham ((luc van) or (duc van)) thanh vien cua tre".
• Adding a wildcard symbol may retrieve word variants: thu sang ((ky tang) OR (kho tang)) ha noi. hieu tu cham ((luc van) or (duc van)) thanh vien cua tre*.