Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, anh thai
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
hanh tai » thanh tai, hang tai, han tai
nuoc van » nuoc va, nuoc san, luoc van
cua tre » cua te, cuu tre, cua triet
qua cac » cua cac
nang o » nang co, nang ho, nang ro
tu san » thu san, tu ban, tu can
tu bat » tu ban, tu dat
o lao » o lai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu bat) or (tu san)) ky nang o lao. hieu qua cac nuoc van ((hanh thai) OR (hanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu bat) OR (tu san)) ky nang o lao. hieu qua cac nuoc van ((hanh thai) OR (hanh tai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu bat) or (tu san)) ky nang o lao. hieu qua cac nuoc van ((hanh thai) OR (hanh tai)) cua tre*".