Perhaps you should try some spelling variations:
va doanh » van doanh, vay doanh, va danh
van chat » cao chat
tu sach » thu sach, su sach, te sach
va chat » va phat, cao chat, hoa chat
tai duc » tai cuc, mai duc, tai du
duc tre » duoc tren, duc tien
ve cham » va cham, ve chat, vu cham
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
ma hoi » mai hoi, xa hoi, ma hoa

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 y nang ma hoi. hieu ((ve cham) or (((va chat) or (van chat)))) tuc va doanh tai duc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang ma hoi. hieu ((ve cham) OR (((va chat) OR (van chat)))) tuc va doanh tai duc tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang ma hoi. hieu ((ve cham) or (((va chat) or (van chat)))) tuc va doanh tai duc tre*.