Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
thu sach » tu sach, thuat sach, thuoc sach
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
van phan » van phong, luan phan, van ban
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
lap lam » cap lam, lam lam, lap lai
x hoi » xa hoi, o hoi, 5 hoi
viec » viet, vien

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang ((x hoi) or (x ho)). hieu van cham duc ((van phan) OR (van thanh)) lap lam viec~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ((x hoi) OR (x ho)). hieu van cham duc ((van phan) OR (van thanh)) lap lam viec.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ((x hoi) or (x ho)). hieu van cham duc ((van phan) OR (van thanh)) lap lam viec".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ((x hoi) or (x ho)). hieu van cham duc ((van phan) OR (van thanh)) lap lam viec*.