Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh dan » thanh san, thanh van, thanh dat
thu sach » thuat sach, thuoc sach, thu hoach
dan cua » dan ca, ban cua, dai cua
luc gia » luoc gia, duc gia, quoc gia
xuc gia » duc gia, tuc gia, quoc gia
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
nang xa » nang x, lang xa, nang ma
ly nang » ky nang, ly hang, ly vang
ve cham » va cham, ve chat, vu cham

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 (thu sach)) ly nang xa hoi. hieu ve cham ((xuc gia) OR (luc gia)) thanh dan cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ly nang xa hoi. hieu ve cham ((xuc gia) OR (luc gia)) thanh dan cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) ly nang xa hoi. hieu ve cham ((xuc gia) OR (luc gia)) thanh dan cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ly nang xa hoi. hieu ve cham ((xuc gia) OR (luc gia)) thanh dan cua triet*.