Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
nang co » nang cao, nang doc, nang noi
ve chat » va chat, van chat
vu cham » va cham, vu kham, tu cham
sach ky » sac ky, sach y, sach ty
danh ke » danh kien, doanh ket, dinh ket
cu tren » tu tren, dua tren
xuc va » duc va, tuc va, luc va
dan ke » dan ky, dan ve, ban ke

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang co hoc. hieu ((ve chat) or (vu cham)) xuc va ((danh ke) OR (dan ke)) cu tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang co hoc. hieu ((ve chat) OR (vu cham)) xuc va ((danh ke) OR (dan ke)) cu tren.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang co hoc. hieu ((ve chat) or (vu cham)) xuc va ((danh ke) OR (dan ke)) cu tren".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang co hoc. hieu ((ve chat) or (vu cham)) xuc va ((danh ke) OR (dan ke)) cu tren*.