Perhaps you should try some spelling variations:
thien van » thi van
thanh lap » thanh san, phan lap, thanh hai
thu sach » tu sach, thuat sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh loi
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
sach ty » sach y, sach tu, sach thu
mac va » mac ca, tac va, ac va
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: thu sach ty nang xa hoi. thien van cau ((mac va) or (duc va)) ((hanh lai) OR (thanh lap)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang xa hoi. thien van cau ((mac va) OR (duc va)) ((hanh lai) OR (thanh lap)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang xa hoi. thien van cau ((mac va) or (duc va)) ((hanh lai) OR (thanh lap)) cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang xa hoi. thien van cau ((mac va) or (duc va)) ((hanh lai) OR (thanh lap)) cua te*.