Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
sach thi » sach thu, sach tai, sach thieu
thi nang » thi cong, ki nang, thi hanh
van manh » van minh, van anh, van hanh
manh dai » manh hai, vanh dai, manh khai
hieu ve » hieu va, hieu van
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
ma hoi » mai hoi, xa hoi, me hoi
ve cac » va cac, vien cac
cua su » qua su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach thi nang ((ma hoi) OR (ma hoa)). hieu ve cac xuc van manh dai cua su~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach thi nang ((ma hoi) OR (ma hoa)). hieu ve cac xuc van manh dai cua su".
• Adding a wildcard symbol may retrieve word variants: toc sach thi nang ((ma hoi) OR (ma hoa)). hieu ve cac xuc van manh dai cua su*.