Perhaps you should try some spelling variations:
thanh vai » thanh hai, thanh van, thanh tai
van thanh » ban thanh, van tuan
cua quoc » cua nuoc, cua thuoc
nang mai » nang ma, nang tai, lang mai
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang
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: ((((tu sach) or (su sach))) or (thu hoach)) y nang mai hoi. hieu va cam xuc van thanh vai cua quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sach) OR (su sach))) OR (thu hoach)) y nang mai hoi. hieu va cam xuc van thanh vai cua quoc.
• Adding a wildcard symbol may retrieve word variants: ((((tu sach) or (su sach))) or (thu hoach)) y nang mai hoi. hieu va cam xuc van thanh vai cua quoc*.