Perhaps you should try some spelling variations:
nhoc nhan » ngoc nhan, hoc nhan, nhac nhan
nuoc nhan » nuoc nhat, ngoc nhan, nuoc nham
cau tren » cu tren, dau tren, ca tren
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
hieu va » lieu va, hieu qua
hanh ve » hanh vi, hanh va, hanh kem
ve cau » ke cau, va cau, ve cac
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu va cac ((nuoc nhan) OR (nhoc nhan)) hanh ve cau tren~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu va cac ((nuoc nhan) OR (nhoc nhan)) hanh ve cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu va cac ((nuoc nhan) OR (nhoc nhan)) hanh ve cau tren*.