Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
cao hoi » cau hoi, co hoi, cao hoc
hoc xuc » hoc duc, hoc nuoc, hoc duoc
hoa xuc » hoa xua, hoa xu, hoa duoc
tai cua » thai cua, tai cuc, tri cua
cua tuc » cua duc, cua tu, cua thuoc

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 ty nang cao hoi. hieu van ((hoc xuc) OR (hoa xuc)) va thanh tai cua tuc~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ty nang cao hoi. hieu van ((hoc xuc) OR (hoa xuc)) va thanh tai cua tuc".
• Adding a wildcard symbol may retrieve word variants: toc sach ty nang cao hoi. hieu van ((hoc xuc) OR (hoa xuc)) va thanh tai cua tuc*.