Perhaps you should try some spelling variations:
nang dau » hang dau, xang dau, nang du
dau truc » cau truc, dai truc, doan truc
dua tren » dung tren
vu khach » vu khanh, vu khac, vay khach
danh vai » danh sai, danh va, doanh van
thi nang » thi cong, ki nang, thi hanh
va danh » va dinh, va dan, va hanh
truc va » thuc va, thuc vat, trung va
su sach » so sach, vu sach
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
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: ((su sach) or (vu khach)) ky nang ma hoi. thi nang dau truc va danh vai ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu khach)) ky nang ma hoi. thi nang dau truc va danh vai ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu khach)) ky nang ma hoi. thi nang dau truc va danh vai ((dua tren) or (cuu tre))*.