Perhaps you should try some spelling variations:
chat nuoc » nhat nuoc, khat nuoc, thoat nuoc
hieu van » hieu va, thien van, lieu va
van chat » cao chat
hanh lai » hanh lam, hanh tai, thanh lap
te sach » toc sach
ty nang » ty xang, ty hang, ly nang
cao hoi » cau hoi, co hoi, cao hoc
va hanh » van hanh, va thanh, va danh
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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 ((ty nang) or (ky nang)) cao hoi. hieu van chat nuoc va hanh lai ((cua tre) OR (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((ty nang) OR (ky nang)) cao hoi. hieu van chat nuoc va hanh lai ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((ty nang) or (ky nang)) cao hoi. hieu van chat nuoc va hanh lai ((cua tre) OR (cua te))".
• Adding a wildcard symbol may retrieve word variants: te sach ((ty nang) or (ky nang)) cao hoi. hieu van chat nuoc va hanh lai ((cua tre) OR (cua te))*.