Perhaps you should try some spelling variations:
trinh vai » trinh van, trinh tai, trinh vat
dan trinh » dan tinh, van trinh, hanh trinh
sach thu » sach thue, sach thieu, sach tham
thu nang » thi nang, thu hang, thu bang
nuoc dan » nuoc dang, nuoc san, duoc dan
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
van cac » van cau, van bac, dan cac
van hac » van hoc, van ha, van hai
vai cua » dai cua, hai cua, lai 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: tu sach thu nang xa hoi. hieu ((van cac) OR (van hac)) nuoc dan trinh vai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thu nang xa hoi. hieu ((van cac) OR (van hac)) nuoc dan trinh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach thu nang xa hoi. hieu ((van cac) OR (van hac)) nuoc dan trinh vai cua te*.