Perhaps you should try some spelling variations:
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
thi van » thi lan, thi hanh
van cau » van dau, van hau, van chat
cua tuc » cua duc, cua tu, cua thuoc
luc va » duc va, loc va
tuc va » thuc va, truc va, tuc xa
cua cu » cua chu, cua cau, cua su

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 thi nang xa hoi. thi van cau ((luc va) or (tuc va)) hanh vi ((cua tuc) or (cua cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi nang xa hoi. thi van cau ((luc va) OR (tuc va)) hanh vi ((cua tuc) OR (cua cu)).
• Adding a wildcard symbol may retrieve word variants: tu sach thi nang xa hoi. thi van cau ((luc va) or (tuc va)) hanh vi ((cua tuc) or (cua cu))*.