Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
xa thanh » ha thanh, ta thanh, gia thanh
cau theo » cau thi, cau tao
va thanh » gia thanh, ban thanh, va tinh
sach ty » sach y, sach tu, sach thu
te sach » toc sach
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
ty nang » ky nang, ty xang, ty hang
va cam » va cham, va cac, va cao

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 ho. hieu va cam tuc ((xa thanh) OR (va thanh)) ve ((cau theo) or (cau tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x ho. hieu va cam tuc ((xa thanh) OR (va thanh)) ve ((cau theo) OR (cau tren)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x ho. hieu va cam tuc ((xa thanh) OR (va thanh)) ve ((cau theo) or (cau tren))".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x ho. hieu va cam tuc ((xa thanh) OR (va thanh)) ve ((cau theo) or (cau tren))*.