Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
va thanh » gia thanh, ban thanh, va tinh
hang ca » hang va, nang cao, hang tai
cac xuc » cam xuc, chat xuc, cac cuoc
cua tuc » cua duc, cua tu, cua thuoc
y hang » ly hang, ty hang, yu hang
ca hoi » cau hoi, cua hoi, xa hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach y hang ca hoi. hieu van ((cac xuc) OR (cac nuoc)) va thanh dai cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach y hang ca hoi. hieu van ((cac xuc) OR (cac nuoc)) va thanh dai cua tuc".
• Adding a wildcard symbol may retrieve word variants: toc sach y hang ca hoi. hieu van ((cac xuc) OR (cac nuoc)) va thanh dai cua tuc*.