Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vai » thanh hai, thanh van, thanh tai
cua quoc » cua nuoc, cua thuoc
thu sach » thuat sach, thuoc sach, thu hoach
nang mai » nang ma, nang tai, lang mai
cao xuc » cam xuc, cao duc, cao suc
vai cua » dai cua, hai cua, lai cua
xuc van » duc van, luc van, vuc van
tu sach » su sach, te sach, tu cach
hieu va » hieu qua
mai hoi » mai khoi, dai hoi, lai hoi
y nang » ky nang, ly nang, v nang

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)) y nang mai hoi. ((hieu va) OR (lieu va)) cao xuc van thanh vai cua quoc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) y nang mai hoi. ((hieu va) OR (lieu va)) cao xuc van thanh vai cua quoc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (thu sach)) y nang mai hoi. ((hieu va) OR (lieu va)) cao xuc van thanh vai cua quoc".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) y nang mai hoi. ((hieu va) OR (lieu va)) cao xuc van thanh vai cua quoc*.