Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va thanh » gia thanh, ban thanh, va tinh
thanh vi » hanh vi, thanh va, thanh ve
cau tren » dau tren, ca tren, cau treo
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va pham » van pham, va phat, va phap
pham tu » phan tu, pham thi, pham tai
cu tren » tu tren, dua tren

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 ty nang xa hoi. lieu va pham tu va thanh vi ((cau tren) or (cu tren))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. lieu va pham tu va thanh vi ((cau tren) OR (cu tren)).
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. lieu va pham tu va thanh vi ((cau tren) or (cu tren))*.