Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vai » thanh hai, thanh van, thanh tai
va thanh » gia thanh, ban thanh, va tinh
thu sach » tu sach, thuat sach, thuoc sach
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
truc va » thuc va, thuc vat, trung va
nang xa » nang x, lang xa, mang xa
vai cua » dai cua, hai cua, lai cua
hieu va » hieu qua

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty ((nang xa) or (nang ma)) hoi. ((hieu va) or (lieu va)) cau truc va thanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty ((nang xa) OR (nang ma)) hoi. ((hieu va) OR (lieu va)) cau truc va thanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ty ((nang xa) or (nang ma)) hoi. ((hieu va) or (lieu va)) cau truc va thanh vai cua triet*.