Perhaps you should try some spelling variations:
quan dai » quang dai, quan doi, quan tai
van quan » van ban
su sach » so sach, vu sach
xuc van » duc van, luc van, vuc van
sach ty » sach y, sach tu, sach thu
lai hoa » dai hoa, loai hoc
mai hoi » mai khoi, dai hoi, lai hoi
ty nang » ky nang, ty xang, ty hang
cua duc » cua tuc, cua nuoc, cua quoc
ve cam » ve cham, va cam, ve cai
ve cac » va cac, vien cac

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 ty nang ((mai hoi) or (lai hoa)). hieu ((ve cam) or (ve cac)) xuc van quan dai cua duc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang ((mai hoi) OR (lai hoa)). hieu ((ve cam) OR (ve cac)) xuc van quan dai cua duc.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang ((mai hoi) or (lai hoa)). hieu ((ve cam) or (ve cac)) xuc van quan dai cua duc*.