Perhaps you should try some spelling variations:
cau tren » cu tren, dau tren, ca tren
nang mai » nang ma, nang tai, lang mai
hanh tai » thanh tai, hang tai, han tai
hieu van » hieu va, thien van, lieu va
thu sach » thuat sach, thuoc sach, thu hoach
mai hoi » mai khoi, dai hoi, lai hoi
van cam » van nam, van lam, van cau
tu sach » su sach, te sach, tu cach
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) or (thu sach)) ky nang mai hoi. hieu van cam xuc va ((hanh tai) or (hanh vi)) cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ky nang mai hoi. hieu van cam xuc va ((hanh tai) OR (hanh vi)) cau tren.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) ky nang mai hoi. hieu van cam xuc va ((hanh tai) or (hanh vi)) cau tren*.