Perhaps you should try some spelling variations:
thuat sach » thuat lanh, thuat san
thanh ve » hanh ve, thanh va, thanh vien
ly nang » ky nang, ly hang, ly vang
duc ban » duc van, dua ban, duc man
y nang » ky nang, v nang, may nang
va cam » va cham, va cac, va cao
ve cua » le cua, de cua, te cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat sach ((y nang) OR (ly nang)) xa hoi. lieu va cam ((duc ban) or (duc tan)) thanh ve cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat sach ((y nang) OR (ly nang)) xa hoi. lieu va cam ((duc ban) OR (duc tan)) thanh ve cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuat sach ((y nang) OR (ly nang)) xa hoi. lieu va cam ((duc ban) or (duc tan)) thanh ve cua te".
• Adding a wildcard symbol may retrieve word variants: thuat sach ((y nang) OR (ly nang)) xa hoi. lieu va cam ((duc ban) or (duc tan)) thanh ve cua te*.