Perhaps you should try some spelling variations:
cau tren » dau tren, ca tren, cau treo
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
cu tren » tu tren, dua tren
va dam » van dam, va dao, va dau
dam tu » nam tu, cam tu, tam 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 xa hoi. hieu va dam tu va hanh vi ((cau tren) OR (cu tren))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang xa hoi. hieu va dam tu va hanh vi ((cau tren) OR (cu tren))".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu va dam tu va hanh vi ((cau tren) OR (cu tren))*.