Perhaps you should try some spelling variations:
tinh van » trinh van, dinh van, tinh va
te sach » toc sach
ly nang » ly hang, ly vang, ly quang
van cua » vang cua, ban cua, dan cua
va tinh » may tinh
va cham » va tham
va chat » van chat, va phat, cao chat
doc va » duoc va, hoc va, duc va
cua cu » cua chu, cua cau, cua su
o hoi » co hoi, o hoc, o hai

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 ((ly nang) or (ky nang)) o hoi. hieu ((va cham) OR (va chat)) doc va tinh van cua cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ly nang) OR (ky nang)) o hoi. hieu ((va cham) OR (va chat)) doc va tinh van cua cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ly nang) or (ky nang)) o hoi. hieu ((va cham) OR (va chat)) doc va tinh van cua cu".
• Adding a wildcard symbol may retrieve word variants: te sach ((ly nang) or (ky nang)) o hoi. hieu ((va cham) OR (va chat)) doc va tinh van cua cu*.