Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
cua viet » ca viet, hoa viet, cua vat
hanh lai » hanh lam, hanh tai, thanh lap
cham duc » pham duc, cham soc, pham duy
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
tu sach » thu sach, su sach, tu cach
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 (te sach)) ty nang x hoi. hieu van cham duc va ((hanh lai) or (thanh tai)) cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty nang x hoi. hieu van cham duc va ((hanh lai) OR (thanh tai)) cua viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (te sach)) ty nang x hoi. hieu van cham duc va ((hanh lai) or (thanh tai)) cua viet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (te sach)) ty nang x hoi. hieu van cham duc va ((hanh lai) or (thanh tai)) cua viet*.