Perhaps you should try some spelling variations:
tuan khai » than khai, quang khai, tuong khai
may nang » may nong, ky nang, cam nang
tuan vai » tuan tai, trang vai, luan van
xuc van » duc van, luc van, vuc van
tu sach » thu sach, su sach, te sach
cua duc » cua tuc, cua nuoc, cua quoc
mai hoi » mai khoi, dai hoi, lai hoi
va cam » va cham, va cac, va cao
v nang » va nang, vu nang, van 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 ((may nang) or (v nang)) mai hoi. lieu va cam xuc van ((tuan vai) OR (tuan khai)) cua duc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((may nang) OR (v nang)) mai hoi. lieu va cam xuc van ((tuan vai) OR (tuan khai)) cua duc*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((may nang) or (v nang)) mai hoi. lieu va cam xuc van ((tuan vai) OR (tuan khai)) cua duc*".