Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nam thuc, nham thu
cham tuc » pham thuc, tham thuc, cham soc
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
hieu vu » hieu va, hieu ve, hieu su
dau cua » day cua, cau cua, dan cua
y nang » ky nang, ly nang, v nang
xa dan » ca dan, xa dai, va dan

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 nang cao hoi. hieu vu ((cham tuc) OR (nham thuc)) xa dan ((dau cua) or (dai cua)) te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y nang cao hoi. hieu vu ((cham tuc) OR (nham thuc)) xa dan ((dau cua) OR (dai cua)) te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang cao hoi. hieu vu ((cham tuc) OR (nham thuc)) xa dan ((dau cua) or (dai cua)) te".
• Adding a wildcard symbol may retrieve word variants: te sach y nang cao hoi. hieu vu ((cham tuc) OR (nham thuc)) xa dan ((dau cua) or (dai cua)) te*.