Perhaps you should try some spelling variations:
van thinh » van thanh, van chinh, van minh
cua viet » hoa viet, cua vat, cua dieu
thinh le » trinh ly
te sach » toc sach
soc van » hoc van, oc van, sac van
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ly nang » ky nang, ly hang, ly vang
ca viet » va viet, co viet, hoa viet
ma hoi » mai hoi, xa hoi, ma hoa
y nang » ky nang, v nang, may nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ((y nang) or (ly nang)) ma hoi. hieu ve cham soc van thinh le ((cua viet) OR (ca viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((y nang) OR (ly nang)) ma hoi. hieu ve cham soc van thinh le ((cua viet) OR (ca viet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((y nang) or (ly nang)) ma hoi. hieu ve cham soc van thinh le ((cua viet) OR (ca viet))".
• Adding a wildcard symbol may retrieve word variants: te sach ((y nang) or (ly nang)) ma hoi. hieu ve cham soc van thinh le ((cua viet) OR (ca viet))*.