Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
danh dau » lanh dao, hang dau, danh tu
va triet » va thiet, va trien, ve triet
te sach » toc sach
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
y tang » ky tang, 6 tang, 7 tang
tuc va » thuc va, truc va, tuc xa

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 tang xa hoi. hieu ve cham ((tuc va) or (duc va)) danh dau ((cua triet) or (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y tang xa hoi. hieu ve cham ((tuc va) OR (duc va)) danh dau ((cua triet) OR (va triet)).
• Adding a wildcard symbol may retrieve word variants: te sach y tang xa hoi. hieu ve cham ((tuc va) or (duc va)) danh dau ((cua triet) or (va triet))*.