Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
tinh he » trinh he, hinh he, tinh ha
va tinh » may tinh
hieu ve » hieu va
cac xuc » cam xuc, cac nuoc, chat xuc
he cua » le cua, hu cua, de cua
xuc va » duc va, tuc va, luc va
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
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: su sach ((y nang) or (v nang)) xa hoi. ((hieu ve) OR (hieu van)) cac xuc va tinh he cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (v nang)) xa hoi. ((hieu ve) OR (hieu van)) cac xuc va tinh he cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) or (v nang)) xa hoi. ((hieu ve) OR (hieu van)) cac xuc va tinh he cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (v nang)) xa hoi. ((hieu ve) OR (hieu van)) cac xuc va tinh he cua te*.