Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
hanh tai » thanh tai, hang tai, han tai
hanh vai » hanh vi, hanh va, hanh van
sach ty » sach y, sach tu, sach thu
te sach » toc sach
ty nang » ky nang, ty xang, ty hang
va cham » va chat, va tham
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam
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 ((ve cam) or (va cham)) tuc va ((hanh vai) OR (hanh tai)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang x hoi. hieu ((ve cam) OR (va cham)) tuc va ((hanh vai) OR (hanh tai)) cau tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ty nang x hoi. hieu ((ve cam) or (va cham)) tuc va ((hanh vai) OR (hanh tai)) cau tren".
• Adding a wildcard symbol may retrieve word variants: te sach ty nang x hoi. hieu ((ve cam) or (va cham)) tuc va ((hanh vai) OR (hanh tai)) cau tren*.