Perhaps you should try some spelling variations:
dau tieng » dau tien, cau tieng, day tieng
tinh lai » tinh lao, tinh hai, minh lai
cam tuc » cam xuc, cam tu, nam thuc
cua tre » cua te, cuu tre, cua triet
va tinh » may tinh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va, hieu van
tu xang » tu lang, tu quang, tct xang
tuc va » thuc va, truc va, tuc xa
ve cam » ve cham, ve cac, va cam

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 ((tu xang) or (ty xang)) xa hoi. hieu ve cam tuc va tinh lai ((cua tre) or (dau tieng))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((tu xang) OR (ty xang)) xa hoi. hieu ve cam tuc va tinh lai ((cua tre) OR (dau tieng)).
• Adding a wildcard symbol may retrieve word variants: tu sach ((tu xang) or (ty xang)) xa hoi. hieu ve cam tuc va tinh lai ((cua tre) or (dau tieng))*.