Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
viec cac » vien cac, viec cua, viec lam
dia danh » dia ban, gia dinh
xa danh » va danh, nam danh, van danh
cac tuc » cac toc, cac tu, cac tac
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
luy tre » luyen tre
vi luy » vi lua, vi luu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (su sach)) ky nang x hoi. hieu viec cac tuc ((xa danh) OR (dia danh)) vi luy tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang x hoi. hieu viec cac tuc ((xa danh) OR (dia danh)) vi luy tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (su sach)) ky nang x hoi. hieu viec cac tuc ((xa danh) OR (dia danh)) vi luy tre".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang x hoi. hieu viec cac tuc ((xa danh) OR (dia danh)) vi luy tre*.