Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
vu khach » vu khanh, vu khac, vay khach
hanh vai » hanh vi, hanh tai, hanh van
hanh va » hang va, hanh vi
thu ban » thu hang
cam thu » nam thu, cac thu, ca thu
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
va cam » va cham, va cac, va cao
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: ((vu khach) or (thuoc sach)) ky tang xa hoi. lieu va cam thu ban ((hanh vai) OR (hanh va)) cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu khach) OR (thuoc sach)) ky tang xa hoi. lieu va cam thu ban ((hanh vai) OR (hanh va)) cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu khach) or (thuoc sach)) ky tang xa hoi. lieu va cam thu ban ((hanh vai) OR (hanh va)) cua te".
• Adding a wildcard symbol may retrieve word variants: ((vu khach) or (thuoc sach)) ky tang xa hoi. lieu va cam thu ban ((hanh vai) OR (hanh va)) cua te*.